Finding the Fourth Proportional to 142,028.89, 195,917.22 and 91,023.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,028.89 : 195,917.22 = 91,023.50 : x
2. Step 2: Convert to fraction form
   142,028.89/195,917.22 = 91,023.50/x
3. Step 3: Cross multiply
   142,028.89x = 195,917.22 × 91,023.50
4. Step 4: Simplify right side
   142,028.89x = 17,833,071,564.46
5. Step 5: Solve for x
   x = 17,833,071,564.46/142,028.89
6. Step 6: Final answer
   x = 125,559.47