Finding the Fourth Proportional to 143,526.52, 198,121.71 and 107,820.10

Step by Step Solution

1. Step 1: Write the proportion equation
   143,526.52 : 198,121.71 = 107,820.10 : x
2. Step 2: Convert to fraction form
   143,526.52/198,121.71 = 107,820.10/x
3. Step 3: Cross multiply
   143,526.52x = 198,121.71 × 107,820.10
4. Step 4: Simplify right side
   143,526.52x = 21,361,502,584.37
5. Step 5: Solve for x
   x = 21,361,502,584.37/143,526.52
6. Step 6: Final answer
   x = 148,833.14