Finding the Fourth Proportional to 99,732, 137,632.80 and 54,410.72

Step by Step Solution

1. Step 1: Write the proportion equation
   99,732 : 137,632.80 = 54,410.72 : x
2. Step 2: Convert to fraction form
   99,732/137,632.80 = 54,410.72/x
3. Step 3: Cross multiply
   99,732x = 137,632.80 × 54,410.72
4. Step 4: Simplify right side
   99,732x = 7,488,699,743.62
5. Step 5: Solve for x
   x = 7,488,699,743.62/99,732
6. Step 6: Final answer
   x = 75,088.23