Finding the Fourth Proportional to 42,711.86, 63,978.51 and 34,346.63

Step by Step Solution

1. Step 1: Write the proportion equation
   42,711.86 : 63,978.51 = 34,346.63 : x
2. Step 2: Convert to fraction form
   42,711.86/63,978.51 = 34,346.63/x
3. Step 3: Cross multiply
   42,711.86x = 63,978.51 × 34,346.63
4. Step 4: Simplify right side
   42,711.86x = 2,197,446,210.92
5. Step 5: Solve for x
   x = 2,197,446,210.92/42,711.86
6. Step 6: Final answer
   x = 51,448.15