Finding the Fourth Proportional to 78,616.17, 108,487.07 and 42,806.10

Step by Step Solution

1. Step 1: Write the proportion equation
   78,616.17 : 108,487.07 = 42,806.10 : x
2. Step 2: Convert to fraction form
   78,616.17/108,487.07 = 42,806.10/x
3. Step 3: Cross multiply
   78,616.17x = 108,487.07 × 42,806.10
4. Step 4: Simplify right side
   78,616.17x = 4,643,908,153.10
5. Step 5: Solve for x
   x = 4,643,908,153.10/78,616.17
6. Step 6: Final answer
   x = 59,070.65