Finding the Fourth Proportional to 63,670.14, 87,891.72 and 42,978.12

Step by Step Solution

1. Step 1: Write the proportion equation
   63,670.14 : 87,891.72 = 42,978.12 : x
2. Step 2: Convert to fraction form
   63,670.14/87,891.72 = 42,978.12/x
3. Step 3: Cross multiply
   63,670.14x = 87,891.72 × 42,978.12
4. Step 4: Simplify right side
   63,670.14x = 3,777,420,889.17
5. Step 5: Solve for x
   x = 3,777,420,889.17/63,670.14
6. Step 6: Final answer
   x = 59,327.98