Finding the Fourth Proportional to 42,702.76, 58,900.17 and 29,275.21

Step by Step Solution

1. Step 1: Write the proportion equation
   42,702.76 : 58,900.17 = 29,275.21 : x
2. Step 2: Convert to fraction form
   42,702.76/58,900.17 = 29,275.21/x
3. Step 3: Cross multiply
   42,702.76x = 58,900.17 × 29,275.21
4. Step 4: Simplify right side
   42,702.76x = 1,724,314,845.79
5. Step 5: Solve for x
   x = 1,724,314,845.79/42,702.76
6. Step 6: Final answer
   x = 40,379.47