Finding the Fourth Proportional to 76,580.52, 105,677.91 and 42,587.25

Step by Step Solution

1. Step 1: Write the proportion equation
   76,580.52 : 105,677.91 = 42,587.25 : x
2. Step 2: Convert to fraction form
   76,580.52/105,677.91 = 42,587.25/x
3. Step 3: Cross multiply
   76,580.52x = 105,677.91 × 42,587.25
4. Step 4: Simplify right side
   76,580.52x = 4,500,531,572.65
5. Step 5: Solve for x
   x = 4,500,531,572.65/76,580.52
6. Step 6: Final answer
   x = 58,768.62