Finding the Fourth Proportional to 99,929.12, 137,900.52 and 54,606.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,929.12 : 137,900.52 = 54,606.10 : x
2. Step 2: Convert to fraction form
   99,929.12/137,900.52 = 54,606.10/x
3. Step 3: Cross multiply
   99,929.12x = 137,900.52 × 54,606.10
4. Step 4: Simplify right side
   99,929.12x = 7,530,209,585.17
5. Step 5: Solve for x
   x = 7,530,209,585.17/99,929.12
6. Step 6: Final answer
   x = 75,355.51