Finding the Fourth Proportional to 141,808.48, 212,760.88 and 89,156.32

Step by Step Solution

1. Step 1: Write the proportion equation
   141,808.48 : 212,760.88 = 89,156.32 : x
2. Step 2: Convert to fraction form
   141,808.48/212,760.88 = 89,156.32/x
3. Step 3: Cross multiply
   141,808.48x = 212,760.88 × 89,156.32
4. Step 4: Simplify right side
   141,808.48x = 18,968,977,100.76
5. Step 5: Solve for x
   x = 18,968,977,100.76/141,808.48
6. Step 6: Final answer
   x = 133,764.76