Finding the Fourth Proportional to 99,832.31, 137,771.42 and 54,513.16

Step by Step Solution

1. Step 1: Write the proportion equation
   99,832.31 : 137,771.42 = 54,513.16 : x
2. Step 2: Convert to fraction form
   99,832.31/137,771.42 = 54,513.16/x
3. Step 3: Cross multiply
   99,832.31x = 137,771.42 × 54,513.16
4. Step 4: Simplify right side
   99,832.31x = 7,510,354,844.89
5. Step 5: Solve for x
   x = 7,510,354,844.89/99,832.31
6. Step 6: Final answer
   x = 75,229.70