Finding the Fourth Proportional to 64,111.60, 88,471.98 and 45,019.12

Step by Step Solution

1. Step 1: Write the proportion equation
   64,111.60 : 88,471.98 = 45,019.12 : x
2. Step 2: Convert to fraction form
   64,111.60/88,471.98 = 45,019.12/x
3. Step 3: Cross multiply
   64,111.60x = 88,471.98 × 45,019.12
4. Step 4: Simplify right side
   64,111.60x = 3,982,930,684.26
5. Step 5: Solve for x
   x = 3,982,930,684.26/64,111.60
6. Step 6: Final answer
   x = 62,124.96