Finding the Fourth Proportional to 102,758.27, 141,802.16 and 57,436.34

Step by Step Solution

1. Step 1: Write the proportion equation
   102,758.27 : 141,802.16 = 57,436.34 : x
2. Step 2: Convert to fraction form
   102,758.27/141,802.16 = 57,436.34/x
3. Step 3: Cross multiply
   102,758.27x = 141,802.16 × 57,436.34
4. Step 4: Simplify right side
   102,758.27x = 8,144,596,078.30
5. Step 5: Solve for x
   x = 8,144,596,078.30/102,758.27
6. Step 6: Final answer
   x = 79,259.77