Finding the Fourth Proportional to 142,754.86, 213,977.58 and 92,870.47

Step by Step Solution

1. Step 1: Write the proportion equation
   142,754.86 : 213,977.58 = 92,870.47 : x
2. Step 2: Convert to fraction form
   142,754.86/213,977.58 = 92,870.47/x
3. Step 3: Cross multiply
   142,754.86x = 213,977.58 × 92,870.47
4. Step 4: Simplify right side
   142,754.86x = 19,872,198,424.06
5. Step 5: Solve for x
   x = 19,872,198,424.06/142,754.86
6. Step 6: Final answer
   x = 139,205.06