Finding the Fourth Proportional to 78,070.41, 107,737.23 and 42,260.31

Step by Step Solution

1. Step 1: Write the proportion equation
   78,070.41 : 107,737.23 = 42,260.31 : x
2. Step 2: Convert to fraction form
   78,070.41/107,737.23 = 42,260.31/x
3. Step 3: Cross multiply
   78,070.41x = 107,737.23 × 42,260.31
4. Step 4: Simplify right side
   78,070.41x = 4,553,008,738.34
5. Step 5: Solve for x
   x = 4,553,008,738.34/78,070.41
6. Step 6: Final answer
   x = 58,319.26