Finding the Fourth Proportional to 74,142.08, 111,178.56 and 42,986.24

Step by Step Solution

1. Step 1: Write the proportion equation
   74,142.08 : 111,178.56 = 42,986.24 : x
2. Step 2: Convert to fraction form
   74,142.08/111,178.56 = 42,986.24/x
3. Step 3: Cross multiply
   74,142.08x = 111,178.56 × 42,986.24
4. Step 4: Simplify right side
   74,142.08x = 4,779,148,263.01
5. Step 5: Solve for x
   x = 4,779,148,263.01/74,142.08
6. Step 6: Final answer
   x = 64,459.32