Finding the Fourth Proportional to 89,607.18, 134,441.01 and 39,680.40

Step by Step Solution

1. Step 1: Write the proportion equation
   89,607.18 : 134,441.01 = 39,680.40 : x
2. Step 2: Convert to fraction form
   89,607.18/134,441.01 = 39,680.40/x
3. Step 3: Cross multiply
   89,607.18x = 134,441.01 × 39,680.40
4. Step 4: Simplify right side
   89,607.18x = 5,334,673,053.20
5. Step 5: Solve for x
   x = 5,334,673,053.20/89,607.18
6. Step 6: Final answer
   x = 59,533.99