Finding the Fourth Proportional to 89,725.32, 123,791.22 and 57,915.36

Step by Step Solution

1. Step 1: Write the proportion equation
   89,725.32 : 123,791.22 = 57,915.36 : x
2. Step 2: Convert to fraction form
   89,725.32/123,791.22 = 57,915.36/x
3. Step 3: Cross multiply
   89,725.32x = 123,791.22 × 57,915.36
4. Step 4: Simplify right side
   89,725.32x = 7,169,413,071.14
5. Step 5: Solve for x
   x = 7,169,413,071.14/89,725.32
6. Step 6: Final answer
   x = 79,904.01