Finding the Fourth Proportional to 99,469.69, 137,268.18 and 54,148.00

Step by Step Solution

1. Step 1: Write the proportion equation
   99,469.69 : 137,268.18 = 54,148.00 : x
2. Step 2: Convert to fraction form
   99,469.69/137,268.18 = 54,148.00/x
3. Step 3: Cross multiply
   99,469.69x = 137,268.18 × 54,148.00
4. Step 4: Simplify right side
   99,469.69x = 7,432,797,558.62
5. Step 5: Solve for x
   x = 7,432,797,558.62/99,469.69
6. Step 6: Final answer
   x = 74,724.25