Finding the Fourth Proportional to 78,464.68, 108,279.98 and 42,655.59

Step by Step Solution

1. Step 1: Write the proportion equation
   78,464.68 : 108,279.98 = 42,655.59 : x
2. Step 2: Convert to fraction form
   78,464.68/108,279.98 = 42,655.59/x
3. Step 3: Cross multiply
   78,464.68x = 108,279.98 × 42,655.59
4. Step 4: Simplify right side
   78,464.68x = 4,618,746,944.78
5. Step 5: Solve for x
   x = 4,618,746,944.78/78,464.68
6. Step 6: Final answer
   x = 58,864.02