Finding the Fourth Proportional to 62,769.78, 86,624.37 and 34,478.10

Step by Step Solution

1. Step 1: Write the proportion equation
   62,769.78 : 86,624.37 = 34,478.10 : x
2. Step 2: Convert to fraction form
   62,769.78/86,624.37 = 34,478.10/x
3. Step 3: Cross multiply
   62,769.78x = 86,624.37 × 34,478.10
4. Step 4: Simplify right side
   62,769.78x = 2,986,643,691.30
5. Step 5: Solve for x
   x = 2,986,643,691.30/62,769.78
6. Step 6: Final answer
   x = 47,580.92