Finding the Fourth Proportional to 86,647.52, 130,019.34 and 42,274.64

Step by Step Solution

1. Step 1: Write the proportion equation
   86,647.52 : 130,019.34 = 42,274.64 : x
2. Step 2: Convert to fraction form
   86,647.52/130,019.34 = 42,274.64/x
3. Step 3: Cross multiply
   86,647.52x = 130,019.34 × 42,274.64
4. Step 4: Simplify right side
   86,647.52x = 5,496,521,275.12
5. Step 5: Solve for x
   x = 5,496,521,275.12/86,647.52
6. Step 6: Final answer
   x = 63,435.41