Finding the Fourth Proportional to 76,518.72, 105,594.39 and 42,526.80

Step by Step Solution

1. Step 1: Write the proportion equation
   76,518.72 : 105,594.39 = 42,526.80 : x
2. Step 2: Convert to fraction form
   76,518.72/105,594.39 = 42,526.80/x
3. Step 3: Cross multiply
   76,518.72x = 105,594.39 × 42,526.80
4. Step 4: Simplify right side
   76,518.72x = 4,490,591,504.65
5. Step 5: Solve for x
   x = 4,490,591,504.65/76,518.72
6. Step 6: Final answer
   x = 58,686.18