Finding the Fourth Proportional to 99,461.72, 137,380.48 and 72,194.27

Step by Step Solution

1. Step 1: Write the proportion equation
   99,461.72 : 137,380.48 = 72,194.27 : x
2. Step 2: Convert to fraction form
   99,461.72/137,380.48 = 72,194.27/x
3. Step 3: Cross multiply
   99,461.72x = 137,380.48 × 72,194.27
4. Step 4: Simplify right side
   99,461.72x = 9,918,082,598.46
5. Step 5: Solve for x
   x = 9,918,082,598.46/99,461.72
6. Step 6: Final answer
   x = 99,717.58