Finding the Fourth Proportional to 78,657.10, 108,548.78 and 42,849.02

Step by Step Solution

1. Step 1: Write the proportion equation
   78,657.10 : 108,548.78 = 42,849.02 : x
2. Step 2: Convert to fraction form
   78,657.10/108,548.78 = 42,849.02/x
3. Step 3: Cross multiply
   78,657.10x = 108,548.78 × 42,849.02
4. Step 4: Simplify right side
   78,657.10x = 4,651,208,845.20
5. Step 5: Solve for x
   x = 4,651,208,845.20/78,657.10
6. Step 6: Final answer
   x = 59,132.73