Finding the Fourth Proportional to 130,139.52, 194,837.40 and 121,872.72

Step by Step Solution

1. Step 1: Write the proportion equation
   130,139.52 : 194,837.40 = 121,872.72 : x
2. Step 2: Convert to fraction form
   130,139.52/194,837.40 = 121,872.72/x
3. Step 3: Cross multiply
   130,139.52x = 194,837.40 × 121,872.72
4. Step 4: Simplify right side
   130,139.52x = 23,745,363,895.73
5. Step 5: Solve for x
   x = 23,745,363,895.73/130,139.52
6. Step 6: Final answer
   x = 182,460.82