Finding the Fourth Proportional to 85,061.02, 117,187.68 and 61,146.31

Step by Step Solution

1. Step 1: Write the proportion equation
   85,061.02 : 117,187.68 = 61,146.31 : x
2. Step 2: Convert to fraction form
   85,061.02/117,187.68 = 61,146.31/x
3. Step 3: Cross multiply
   85,061.02x = 117,187.68 × 61,146.31
4. Step 4: Simplify right side
   85,061.02x = 7,165,594,209.46
5. Step 5: Solve for x
   x = 7,165,594,209.46/85,061.02
6. Step 6: Final answer
   x = 84,240.63