Finding the Fourth Proportional to 142,154.91, 213,106.69 and 57,985.48

Step by Step Solution

1. Step 1: Write the proportion equation
   142,154.91 : 213,106.69 = 57,985.48 : x
2. Step 2: Convert to fraction form
   142,154.91/213,106.69 = 57,985.48/x
3. Step 3: Cross multiply
   142,154.91x = 213,106.69 × 57,985.48
4. Step 4: Simplify right side
   142,154.91x = 12,357,093,710.86
5. Step 5: Solve for x
   x = 12,357,093,710.86/142,154.91
6. Step 6: Final answer
   x = 86,926.96