Finding the Fourth Proportional to 99,463.94, 137,213.89 and 59,155.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,463.94 : 137,213.89 = 59,155.10 : x
2. Step 2: Convert to fraction form
   99,463.94/137,213.89 = 59,155.10/x
3. Step 3: Cross multiply
   99,463.94x = 137,213.89 × 59,155.10
4. Step 4: Simplify right side
   99,463.94x = 8,116,900,550.38
5. Step 5: Solve for x
   x = 8,116,900,550.38/99,463.94
6. Step 6: Final answer
   x = 81,606.47