Finding the Fourth Proportional to 142,331.57, 196,339.83 and 91,287.51

Step by Step Solution

1. Step 1: Write the proportion equation
   142,331.57 : 196,339.83 = 91,287.51 : x
2. Step 2: Convert to fraction form
   142,331.57/196,339.83 = 91,287.51/x
3. Step 3: Cross multiply
   142,331.57x = 196,339.83 × 91,287.51
4. Step 4: Simplify right side
   142,331.57x = 17,923,374,194.52
5. Step 5: Solve for x
   x = 17,923,374,194.52/142,331.57
6. Step 6: Final answer
   x = 125,926.91