Finding the Fourth Proportional to 55,022.99, 76,000.43 and 42,429.11

Step by Step Solution

1. Step 1: Write the proportion equation
   55,022.99 : 76,000.43 = 42,429.11 : x
2. Step 2: Convert to fraction form
   55,022.99/76,000.43 = 42,429.11/x
3. Step 3: Cross multiply
   55,022.99x = 76,000.43 × 42,429.11
4. Step 4: Simplify right side
   55,022.99x = 3,224,630,330.59
5. Step 5: Solve for x
   x = 3,224,630,330.59/55,022.99
6. Step 6: Final answer
   x = 58,605.15