Finding the Fourth Proportional to 102,686.27, 141,696.86 and 57,363.28

Step by Step Solution

1. Step 1: Write the proportion equation
   102,686.27 : 141,696.86 = 57,363.28 : x
2. Step 2: Convert to fraction form
   102,686.27/141,696.86 = 57,363.28/x
3. Step 3: Cross multiply
   102,686.27x = 141,696.86 × 57,363.28
4. Step 4: Simplify right side
   102,686.27x = 8,128,196,444.47
5. Step 5: Solve for x
   x = 8,128,196,444.47/102,686.27
6. Step 6: Final answer
   x = 79,155.63