Finding the Fourth Proportional to 141,839.72, 212,760.28 and 42,001.80

Step by Step Solution

1. Step 1: Write the proportion equation
   141,839.72 : 212,760.28 = 42,001.80 : x
2. Step 2: Convert to fraction form
   141,839.72/212,760.28 = 42,001.80/x
3. Step 3: Cross multiply
   141,839.72x = 212,760.28 × 42,001.80
4. Step 4: Simplify right side
   141,839.72x = 8,936,314,728.50
5. Step 5: Solve for x
   x = 8,936,314,728.50/141,839.72
6. Step 6: Final answer
   x = 63,002.91