Finding the Fourth Proportional to 105,514.71, 145,604.55 and 57,758.83

Step by Step Solution

1. Step 1: Write the proportion equation
   105,514.71 : 145,604.55 = 57,758.83 : x
2. Step 2: Convert to fraction form
   105,514.71/145,604.55 = 57,758.83/x
3. Step 3: Cross multiply
   105,514.71x = 145,604.55 × 57,758.83
4. Step 4: Simplify right side
   105,514.71x = 8,409,948,303.26
5. Step 5: Solve for x
   x = 8,409,948,303.26/105,514.71
6. Step 6: Final answer
   x = 79,704.04