Finding the Fourth Proportional to 62,981.28, 86,913.72 and 34,686.80

Step by Step Solution

1. Step 1: Write the proportion equation
   62,981.28 : 86,913.72 = 34,686.80 : x
2. Step 2: Convert to fraction form
   62,981.28/86,913.72 = 34,686.80/x
3. Step 3: Cross multiply
   62,981.28x = 86,913.72 × 34,686.80
4. Step 4: Simplify right side
   62,981.28x = 3,014,758,822.90
5. Step 5: Solve for x
   x = 3,014,758,822.90/62,981.28
6. Step 6: Final answer
   x = 47,867.54