Finding the Fourth Proportional to 76,514.49, 105,587.91 and 42,522.12

Step by Step Solution

1. Step 1: Write the proportion equation
   76,514.49 : 105,587.91 = 42,522.12 : x
2. Step 2: Convert to fraction form
   76,514.49/105,587.91 = 42,522.12/x
3. Step 3: Cross multiply
   76,514.49x = 105,587.91 × 42,522.12
4. Step 4: Simplify right side
   76,514.49x = 4,489,821,779.57
5. Step 5: Solve for x
   x = 4,489,821,779.57/76,514.49
6. Step 6: Final answer
   x = 58,679.37