Finding the Fourth Proportional to 82,510.60, 113,916.18 and 56,713.56

Step by Step Solution

1. Step 1: Write the proportion equation
   82,510.60 : 113,916.18 = 56,713.56 : x
2. Step 2: Convert to fraction form
   82,510.60/113,916.18 = 56,713.56/x
3. Step 3: Cross multiply
   82,510.60x = 113,916.18 × 56,713.56
4. Step 4: Simplify right side
   82,510.60x = 6,460,592,109.40
5. Step 5: Solve for x
   x = 6,460,592,109.40/82,510.60
6. Step 6: Final answer
   x = 78,300.15