Finding the Fourth Proportional to 102,434.56, 141,368.16 and 57,106.42

Step by Step Solution

1. Step 1: Write the proportion equation
   102,434.56 : 141,368.16 = 57,106.42 : x
2. Step 2: Convert to fraction form
   102,434.56/141,368.16 = 57,106.42/x
3. Step 3: Cross multiply
   102,434.56x = 141,368.16 × 57,106.42
4. Step 4: Simplify right side
   102,434.56x = 8,073,029,519.59
5. Step 5: Solve for x
   x = 8,073,029,519.59/102,434.56
6. Step 6: Final answer
   x = 78,811.58