Finding the Fourth Proportional to 76,182.40, 105,130.56 and 42,649.60

Step by Step Solution

1. Step 1: Write the proportion equation
   76,182.40 : 105,130.56 = 42,649.60 : x
2. Step 2: Convert to fraction form
   76,182.40/105,130.56 = 42,649.60/x
3. Step 3: Cross multiply
   76,182.40x = 105,130.56 × 42,649.60
4. Step 4: Simplify right side
   76,182.40x = 4,483,776,331.78
5. Step 5: Solve for x
   x = 4,483,776,331.78/76,182.40
6. Step 6: Final answer
   x = 58,855.80