Finding the Fourth Proportional to 142,526.61, 213,851.93 and 89,340.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,526.61 : 213,851.93 = 89,340.48 : x
2. Step 2: Convert to fraction form
   142,526.61/213,851.93 = 89,340.48/x
3. Step 3: Cross multiply
   142,526.61x = 213,851.93 × 89,340.48
4. Step 4: Simplify right side
   142,526.61x = 19,105,633,628.42
5. Step 5: Solve for x
   x = 19,105,633,628.42/142,526.61
6. Step 6: Final answer
   x = 134,049.59