Finding the Fourth Proportional to 78,468.16, 108,281.47 and 42,657.86

Step by Step Solution

1. Step 1: Write the proportion equation
   78,468.16 : 108,281.47 = 42,657.86 : x
2. Step 2: Convert to fraction form
   78,468.16/108,281.47 = 42,657.86/x
3. Step 3: Cross multiply
   78,468.16x = 108,281.47 × 42,657.86
4. Step 4: Simplify right side
   78,468.16x = 4,619,055,574.56
5. Step 5: Solve for x
   x = 4,619,055,574.56/78,468.16
6. Step 6: Final answer
   x = 58,865.35