Finding the Fourth Proportional to 78,536.18, 108,379.89 and 42,726.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,536.18 : 108,379.89 = 42,726.15 : x
2. Step 2: Convert to fraction form
   78,536.18/108,379.89 = 42,726.15/x
3. Step 3: Cross multiply
   78,536.18x = 108,379.89 × 42,726.15
4. Step 4: Simplify right side
   78,536.18x = 4,630,655,437.12
5. Step 5: Solve for x
   x = 4,630,655,437.12/78,536.18
6. Step 6: Final answer
   x = 58,962.06