Finding the Fourth Proportional to 143,762.81, 198,388.10 and 90,076.82

Step by Step Solution

1. Step 1: Write the proportion equation
   143,762.81 : 198,388.10 = 90,076.82 : x
2. Step 2: Convert to fraction form
   143,762.81/198,388.10 = 90,076.82/x
3. Step 3: Cross multiply
   143,762.81x = 198,388.10 × 90,076.82
4. Step 4: Simplify right side
   143,762.81x = 17,870,168,407.09
5. Step 5: Solve for x
   x = 17,870,168,407.09/143,762.81
6. Step 6: Final answer
   x = 124,303.14