Finding the Fourth Proportional to 127,018.31, 175,140.73 and 103,974.83

Step by Step Solution

1. Step 1: Write the proportion equation
   127,018.31 : 175,140.73 = 103,974.83 : x
2. Step 2: Convert to fraction form
   127,018.31/175,140.73 = 103,974.83/x
3. Step 3: Cross multiply
   127,018.31x = 175,140.73 × 103,974.83
4. Step 4: Simplify right side
   127,018.31x = 18,210,227,538.87
5. Step 5: Solve for x
   x = 18,210,227,538.87/127,018.31
6. Step 6: Final answer
   x = 143,366.95