Finding the Fourth Proportional to 62,422.31, 86,142.79 and 34,128

Step by Step Solution

1. Step 1: Write the proportion equation
   62,422.31 : 86,142.79 = 34,128 : x
2. Step 2: Convert to fraction form
   62,422.31/86,142.79 = 34,128/x
3. Step 3: Cross multiply
   62,422.31x = 86,142.79 × 34,128
4. Step 4: Simplify right side
   62,422.31x = 2,939,881,179.78
5. Step 5: Solve for x
   x = 2,939,881,179.78/62,422.31
6. Step 6: Final answer
   x = 47,096.64