Finding the Fourth Proportional to 160,535.17, 240,783.58 and 42,215.72

Step by Step Solution

1. Step 1: Write the proportion equation
   160,535.17 : 240,783.58 = 42,215.72 : x
2. Step 2: Convert to fraction form
   160,535.17/240,783.58 = 42,215.72/x
3. Step 3: Cross multiply
   160,535.17x = 240,783.58 × 42,215.72
4. Step 4: Simplify right side
   160,535.17x = 10,164,851,982.80
5. Step 5: Solve for x
   x = 10,164,851,982.80/160,535.17
6. Step 6: Final answer
   x = 63,318.54