Finding the Fourth Proportional to 89,400.30, 123,355.26 and 60,742.68

Step by Step Solution

1. Step 1: Write the proportion equation
   89,400.30 : 123,355.26 = 60,742.68 : x
2. Step 2: Convert to fraction form
   89,400.30/123,355.26 = 60,742.68/x
3. Step 3: Cross multiply
   89,400.30x = 123,355.26 × 60,742.68
4. Step 4: Simplify right side
   89,400.30x = 7,492,929,084.50
5. Step 5: Solve for x
   x = 7,492,929,084.50/89,400.30
6. Step 6: Final answer
   x = 83,813.24