Finding the Fourth Proportional to 62,978.20, 86,905.91 and 34,683.89

Step by Step Solution

1. Step 1: Write the proportion equation
   62,978.20 : 86,905.91 = 34,683.89 : x
2. Step 2: Convert to fraction form
   62,978.20/86,905.91 = 34,683.89/x
3. Step 3: Cross multiply
   62,978.20x = 86,905.91 × 34,683.89
4. Step 4: Simplify right side
   62,978.20x = 3,014,234,588.26
5. Step 5: Solve for x
   x = 3,014,234,588.26/62,978.20
6. Step 6: Final answer
   x = 47,861.56