Finding the Fourth Proportional to 62,789.88, 86,649.78 and 34,109.40

Step by Step Solution

1. Step 1: Write the proportion equation
   62,789.88 : 86,649.78 = 34,109.40 : x
2. Step 2: Convert to fraction form
   62,789.88/86,649.78 = 34,109.40/x
3. Step 3: Cross multiply
   62,789.88x = 86,649.78 × 34,109.40
4. Step 4: Simplify right side
   62,789.88x = 2,955,572,005.93
5. Step 5: Solve for x
   x = 2,955,572,005.93/62,789.88
6. Step 6: Final answer
   x = 47,070.83