Finding the Fourth Proportional to 141,838.72, 212,758.78 and 42,000.80

Step by Step Solution

1. Step 1: Write the proportion equation
   141,838.72 : 212,758.78 = 42,000.80 : x
2. Step 2: Convert to fraction form
   141,838.72/212,758.78 = 42,000.80/x
3. Step 3: Cross multiply
   141,838.72x = 212,758.78 × 42,000.80
4. Step 4: Simplify right side
   141,838.72x = 8,936,038,967.02
5. Step 5: Solve for x
   x = 8,936,038,967.02/141,838.72
6. Step 6: Final answer
   x = 63,001.41