Finding the Fourth Proportional to 78,510.43, 108,298.26 and 49,392.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,510.43 : 108,298.26 = 49,392.50 : x
2. Step 2: Convert to fraction form
   78,510.43/108,298.26 = 49,392.50/x
3. Step 3: Cross multiply
   78,510.43x = 108,298.26 × 49,392.50
4. Step 4: Simplify right side
   78,510.43x = 5,349,121,265.56
5. Step 5: Solve for x
   x = 5,349,121,265.56/78,510.43
6. Step 6: Final answer
   x = 68,132.62