Finding the Fourth Proportional to 127,213.56, 175,557.51 and 72,018.27

Step by Step Solution

1. Step 1: Write the proportion equation
   127,213.56 : 175,557.51 = 72,018.27 : x
2. Step 2: Convert to fraction form
   127,213.56/175,557.51 = 72,018.27/x
3. Step 3: Cross multiply
   127,213.56x = 175,557.51 × 72,018.27
4. Step 4: Simplify right side
   127,213.56x = 12,643,348,155.71
5. Step 5: Solve for x
   x = 12,643,348,155.71/127,213.56
6. Step 6: Final answer
   x = 99,386.80