Finding the Fourth Proportional to 142,950, 197,141.88 and 89,239.98

Step by Step Solution

1. Step 1: Write the proportion equation
   142,950 : 197,141.88 = 89,239.98 : x
2. Step 2: Convert to fraction form
   142,950/197,141.88 = 89,239.98/x
3. Step 3: Cross multiply
   142,950x = 197,141.88 × 89,239.98
4. Step 4: Simplify right side
   142,950x = 17,592,937,428.36
5. Step 5: Solve for x
   x = 17,592,937,428.36/142,950
6. Step 6: Final answer
   x = 123,070.57