Finding the Fourth Proportional to 78,141.60, 107,835.90 and 42,331.59

Step by Step Solution

1. Step 1: Write the proportion equation
   78,141.60 : 107,835.90 = 42,331.59 : x
2. Step 2: Convert to fraction form
   78,141.60/107,835.90 = 42,331.59/x
3. Step 3: Cross multiply
   78,141.60x = 107,835.90 × 42,331.59
4. Step 4: Simplify right side
   78,141.60x = 4,564,865,106.08
5. Step 5: Solve for x
   x = 4,564,865,106.08/78,141.60
6. Step 6: Final answer
   x = 58,417.86