Finding the Fourth Proportional to 42,279.30, 58,346.15 and 23,158.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,279.30 : 58,346.15 = 23,158.80 : x
2. Step 2: Convert to fraction form
   42,279.30/58,346.15 = 23,158.80/x
3. Step 3: Cross multiply
   42,279.30x = 58,346.15 × 23,158.80
4. Step 4: Simplify right side
   42,279.30x = 1,351,226,702.83
5. Step 5: Solve for x
   x = 1,351,226,702.83/42,279.30
6. Step 6: Final answer
   x = 31,959.53