Finding the Fourth Proportional to 99,541.59, 137,366.33 and 57,106.77

Step by Step Solution

1. Step 1: Write the proportion equation
   99,541.59 : 137,366.33 = 57,106.77 : x
2. Step 2: Convert to fraction form
   99,541.59/137,366.33 = 57,106.77/x
3. Step 3: Cross multiply
   99,541.59x = 137,366.33 × 57,106.77
4. Step 4: Simplify right side
   99,541.59x = 7,844,547,127.52
5. Step 5: Solve for x
   x = 7,844,547,127.52/99,541.59
6. Step 6: Final answer
   x = 78,806.73