Finding the Fourth Proportional to 102,723.83, 141,756.15 and 57,402.18

Step by Step Solution

1. Step 1: Write the proportion equation
   102,723.83 : 141,756.15 = 57,402.18 : x
2. Step 2: Convert to fraction form
   102,723.83/141,756.15 = 57,402.18/x
3. Step 3: Cross multiply
   102,723.83x = 141,756.15 × 57,402.18
4. Step 4: Simplify right side
   102,723.83x = 8,137,112,253.67
5. Step 5: Solve for x
   x = 8,137,112,253.67/102,723.83
6. Step 6: Final answer
   x = 79,213.49