Finding the Fourth Proportional to 78,510.23, 108,344.62 and 42,700.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,510.23 : 108,344.62 = 42,700.50 : x
2. Step 2: Convert to fraction form
   78,510.23/108,344.62 = 42,700.50/x
3. Step 3: Cross multiply
   78,510.23x = 108,344.62 × 42,700.50
4. Step 4: Simplify right side
   78,510.23x = 4,626,369,446.31
5. Step 5: Solve for x
   x = 4,626,369,446.31/78,510.23
6. Step 6: Final answer
   x = 58,926.96