Finding the Fourth Proportional to 99,216.25, 136,863.89 and 62,851.10

Step by Step Solution

1. Step 1: Write the proportion equation
   99,216.25 : 136,863.89 = 62,851.10 : x
2. Step 2: Convert to fraction form
   99,216.25/136,863.89 = 62,851.10/x
3. Step 3: Cross multiply
   99,216.25x = 136,863.89 × 62,851.10
4. Step 4: Simplify right side
   99,216.25x = 8,602,045,038.20
5. Step 5: Solve for x
   x = 8,602,045,038.20/99,216.25
6. Step 6: Final answer
   x = 86,699.96