Finding the Fourth Proportional to 62,978, 86,909.76 and 34,686.32

Step by Step Solution

1. Step 1: Write the proportion equation
   62,978 : 86,909.76 = 34,686.32 : x
2. Step 2: Convert to fraction form
   62,978/86,909.76 = 34,686.32/x
3. Step 3: Cross multiply
   62,978x = 86,909.76 × 34,686.32
4. Step 4: Simplify right side
   62,978x = 3,014,579,746.48
5. Step 5: Solve for x
   x = 3,014,579,746.48/62,978
6. Step 6: Final answer
   x = 47,867.19