Finding the Fourth Proportional to 148,145.76, 204,426.28 and 83,609.21

Step by Step Solution

1. Step 1: Write the proportion equation
   148,145.76 : 204,426.28 = 83,609.21 : x
2. Step 2: Convert to fraction form
   148,145.76/204,426.28 = 83,609.21/x
3. Step 3: Cross multiply
   148,145.76x = 204,426.28 × 83,609.21
4. Step 4: Simplify right side
   148,145.76x = 17,091,920,389.62
5. Step 5: Solve for x
   x = 17,091,920,389.62/148,145.76
6. Step 6: Final answer
   x = 115,372.32