Finding the Fourth Proportional to 143,908.16, 215,973.12 and 93,974.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,908.16 : 215,973.12 = 93,974.72 : x
2. Step 2: Convert to fraction form
   143,908.16/215,973.12 = 93,974.72/x
3. Step 3: Cross multiply
   143,908.16x = 215,973.12 × 93,974.72
4. Step 4: Simplify right side
   143,908.16x = 20,296,013,479.53
5. Step 5: Solve for x
   x = 20,296,013,479.53/143,908.16
6. Step 6: Final answer
   x = 141,034.49