Finding the Fourth Proportional to 143,830.81, 198,462.81 and 83,376.69

Step by Step Solution

1. Step 1: Write the proportion equation
   143,830.81 : 198,462.81 = 83,376.69 : x
2. Step 2: Convert to fraction form
   143,830.81/198,462.81 = 83,376.69/x
3. Step 3: Cross multiply
   143,830.81x = 198,462.81 × 83,376.69
4. Step 4: Simplify right side
   143,830.81x = 16,547,172,185.90
5. Step 5: Solve for x
   x = 16,547,172,185.90/143,830.81
6. Step 6: Final answer
   x = 115,046.09