Finding the Fourth Proportional to 62,721.42, 86,557.05 and 34,426.50

Step by Step Solution

1. Step 1: Write the proportion equation
   62,721.42 : 86,557.05 = 34,426.50 : x
2. Step 2: Convert to fraction form
   62,721.42/86,557.05 = 34,426.50/x
3. Step 3: Cross multiply
   62,721.42x = 86,557.05 × 34,426.50
4. Step 4: Simplify right side
   62,721.42x = 2,979,856,281.83
5. Step 5: Solve for x
   x = 2,979,856,281.83/62,721.42
6. Step 6: Final answer
   x = 47,509.39