Finding the Fourth Proportional to 63,670.64, 87,892.41 and 42,978.62

Step by Step Solution

1. Step 1: Write the proportion equation
   63,670.64 : 87,892.41 = 42,978.62 : x
2. Step 2: Convert to fraction form
   63,670.64/87,892.41 = 42,978.62/x
3. Step 3: Cross multiply
   63,670.64x = 87,892.41 × 42,978.62
4. Step 4: Simplify right side
   63,670.64x = 3,777,494,490.27
5. Step 5: Solve for x
   x = 3,777,494,490.27/63,670.64
6. Step 6: Final answer
   x = 59,328.67