Finding the Fourth Proportional to 42,590.80, 63,924.27 and 42,432.04

Step by Step Solution

1. Step 1: Write the proportion equation
   42,590.80 : 63,924.27 = 42,432.04 : x
2. Step 2: Convert to fraction form
   42,590.80/63,924.27 = 42,432.04/x
3. Step 3: Cross multiply
   42,590.80x = 63,924.27 × 42,432.04
4. Step 4: Simplify right side
   42,590.80x = 2,712,437,181.61
5. Step 5: Solve for x
   x = 2,712,437,181.61/42,590.80
6. Step 6: Final answer
   x = 63,685.99