Finding the Fourth Proportional to 78,287.61, 108,037.17 and 42,477.87

Step by Step Solution

1. Step 1: Write the proportion equation
   78,287.61 : 108,037.17 = 42,477.87 : x
2. Step 2: Convert to fraction form
   78,287.61/108,037.17 = 42,477.87/x
3. Step 3: Cross multiply
   78,287.61x = 108,037.17 × 42,477.87
4. Step 4: Simplify right side
   78,287.61x = 4,589,188,540.39
5. Step 5: Solve for x
   x = 4,589,188,540.39/78,287.61
6. Step 6: Final answer
   x = 58,619.60