Finding the Fourth Proportional to 215,134.47, 322,751.52 and 72,972.18

Step by Step Solution

1. Step 1: Write the proportion equation
   215,134.47 : 322,751.52 = 72,972.18 : x
2. Step 2: Convert to fraction form
   215,134.47/322,751.52 = 72,972.18/x
3. Step 3: Cross multiply
   215,134.47x = 322,751.52 × 72,972.18
4. Step 4: Simplify right side
   215,134.47x = 23,551,882,012.71
5. Step 5: Solve for x
   x = 23,551,882,012.71/215,134.47
6. Step 6: Final answer
   x = 109,475.17