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Finding the Fourth Proportional to 99,533.80, 148,868.70 and 89,079.40

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Solution

The fourth proportional to 99,533.80, 148,868.70 and 89,079.40 is: 133,232.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,533.80 : 148,868.70 = 89,079.40 : x
  2. Step 2: Convert to fraction form
    99,533.80/148,868.70 = 89,079.40/x
  3. Step 3: Cross multiply
    99,533.80x = 148,868.70 × 89,079.40
  4. Step 4: Simplify right side
    99,533.80x = 13,261,134,474.78
  5. Step 5: Solve for x
    x = 13,261,134,474.78/99,533.80
  6. Step 6: Final answer
    x = 133,232.47

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