Finding the Fourth Proportional to 88,693.40, 122,498.71 and 64,601.70

Step by Step Solution

1. Step 1: Write the proportion equation
   88,693.40 : 122,498.71 = 64,601.70 : x
2. Step 2: Convert to fraction form
   88,693.40/122,498.71 = 64,601.70/x
3. Step 3: Cross multiply
   88,693.40x = 122,498.71 × 64,601.70
4. Step 4: Simplify right side
   88,693.40x = 7,913,625,345.37
5. Step 5: Solve for x
   x = 7,913,625,345.37/88,693.40
6. Step 6: Final answer
   x = 89,224.52