Finding the Fourth Proportional to 72,428.88, 108,643.41 and 19,838.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,428.88 : 108,643.41 = 19,838.82 : x
2. Step 2: Convert to fraction form
   72,428.88/108,643.41 = 19,838.82/x
3. Step 3: Cross multiply
   72,428.88x = 108,643.41 × 19,838.82
4. Step 4: Simplify right side
   72,428.88x = 2,155,357,055.18
5. Step 5: Solve for x
   x = 2,155,357,055.18/72,428.88
6. Step 6: Final answer
   x = 29,758.25