Finding the Fourth Proportional to 42,279.77, 58,385.31 and 31,650.95

Step by Step Solution

1. Step 1: Write the proportion equation
   42,279.77 : 58,385.31 = 31,650.95 : x
2. Step 2: Convert to fraction form
   42,279.77/58,385.31 = 31,650.95/x
3. Step 3: Cross multiply
   42,279.77x = 58,385.31 × 31,650.95
4. Step 4: Simplify right side
   42,279.77x = 1,847,950,554.82
5. Step 5: Solve for x
   x = 1,847,950,554.82/42,279.77
6. Step 6: Final answer
   x = 43,707.67