Finding the Fourth Proportional to 42,553.90, 63,830.86 and 42,492.40

Step by Step Solution

1. Step 1: Write the proportion equation
   42,553.90 : 63,830.86 = 42,492.40 : x
2. Step 2: Convert to fraction form
   42,553.90/63,830.86 = 42,492.40/x
3. Step 3: Cross multiply
   42,553.90x = 63,830.86 × 42,492.40
4. Step 4: Simplify right side
   42,553.90x = 2,712,326,608.38
5. Step 5: Solve for x
   x = 2,712,326,608.38/42,553.90
6. Step 6: Final answer
   x = 63,738.62