Finding the Fourth Proportional to 58,401.94, 87,282.86 and 42,640.18

Step by Step Solution

1. Step 1: Write the proportion equation
   58,401.94 : 87,282.86 = 42,640.18 : x
2. Step 2: Convert to fraction form
   58,401.94/87,282.86 = 42,640.18/x
3. Step 3: Cross multiply
   58,401.94x = 87,282.86 × 42,640.18
4. Step 4: Simplify right side
   58,401.94x = 3,721,756,861.31
5. Step 5: Solve for x
   x = 3,721,756,861.31/58,401.94
6. Step 6: Final answer
   x = 63,726.60