Finding the Fourth Proportional to 148,089.40, 204,150.81 and 105,574.12

Step by Step Solution

1. Step 1: Write the proportion equation
   148,089.40 : 204,150.81 = 105,574.12 : x
2. Step 2: Convert to fraction form
   148,089.40/204,150.81 = 105,574.12/x
3. Step 3: Cross multiply
   148,089.40x = 204,150.81 × 105,574.12
4. Step 4: Simplify right side
   148,089.40x = 21,553,041,985.44
5. Step 5: Solve for x
   x = 21,553,041,985.44/148,089.40
6. Step 6: Final answer
   x = 145,540.75