Finding the Fourth Proportional to 143,439.84, 197,943.48 and 83,002.10

Step by Step Solution

1. Step 1: Write the proportion equation
   143,439.84 : 197,943.48 = 83,002.10 : x
2. Step 2: Convert to fraction form
   143,439.84/197,943.48 = 83,002.10/x
3. Step 3: Cross multiply
   143,439.84x = 197,943.48 × 83,002.10
4. Step 4: Simplify right side
   143,439.84x = 16,429,723,531.59
5. Step 5: Solve for x
   x = 16,429,723,531.59/143,439.84
6. Step 6: Final answer
   x = 114,540.87