Finding the Fourth Proportional to 78,070.56, 107,737.34 and 42,260.88

Step by Step Solution

1. Step 1: Write the proportion equation
   78,070.56 : 107,737.34 = 42,260.88 : x
2. Step 2: Convert to fraction form
   78,070.56/107,737.34 = 42,260.88/x
3. Step 3: Cross multiply
   78,070.56x = 107,737.34 × 42,260.88
4. Step 4: Simplify right side
   78,070.56x = 4,553,074,797.26
5. Step 5: Solve for x
   x = 4,553,074,797.26/78,070.56
6. Step 6: Final answer
   x = 58,320.00