Finding the Fourth Proportional to 89,139.04, 122,752.62 and 83,440.60

Step by Step Solution

1. Step 1: Write the proportion equation
   89,139.04 : 122,752.62 = 83,440.60 : x
2. Step 2: Convert to fraction form
   89,139.04/122,752.62 = 83,440.60/x
3. Step 3: Cross multiply
   89,139.04x = 122,752.62 × 83,440.60
4. Step 4: Simplify right side
   89,139.04x = 10,242,552,264.37
5. Step 5: Solve for x
   x = 10,242,552,264.37/89,139.04
6. Step 6: Final answer
   x = 114,905.35