Finding the Fourth Proportional to 102,298.75, 141,171.31 and 56,974.08

Step by Step Solution

1. Step 1: Write the proportion equation
   102,298.75 : 141,171.31 = 56,974.08 : x
2. Step 2: Convert to fraction form
   102,298.75/141,171.31 = 56,974.08/x
3. Step 3: Cross multiply
   102,298.75x = 141,171.31 × 56,974.08
4. Step 4: Simplify right side
   102,298.75x = 8,043,105,789.78
5. Step 5: Solve for x
   x = 8,043,105,789.78/102,298.75
6. Step 6: Final answer
   x = 78,623.70