Finding the Fourth Proportional to 78,708.41, 108,617.61 and 42,898.41

Step by Step Solution

1. Step 1: Write the proportion equation
   78,708.41 : 108,617.61 = 42,898.41 : x
2. Step 2: Convert to fraction form
   78,708.41/108,617.61 = 42,898.41/x
3. Step 3: Cross multiply
   78,708.41x = 108,617.61 × 42,898.41
4. Step 4: Simplify right side
   78,708.41x = 4,659,522,686.57
5. Step 5: Solve for x
   x = 4,659,522,686.57/78,708.41
6. Step 6: Final answer
   x = 59,199.81