Finding the Fourth Proportional to 250,082.72, 345,114.17 and 136,905.47

Step by Step Solution

1. Step 1: Write the proportion equation
   250,082.72 : 345,114.17 = 136,905.47 : x
2. Step 2: Convert to fraction form
   250,082.72/345,114.17 = 136,905.47/x
3. Step 3: Cross multiply
   250,082.72x = 345,114.17 × 136,905.47
4. Step 4: Simplify right side
   250,082.72x = 47,248,016,962.98
5. Step 5: Solve for x
   x = 47,248,016,962.98/250,082.72
6. Step 6: Final answer
   x = 188,929.55