Finding the Fourth Proportional to 142,090.22, 196,072.06 and 91,012.82

Step by Step Solution

1. Step 1: Write the proportion equation
   142,090.22 : 196,072.06 = 91,012.82 : x
2. Step 2: Convert to fraction form
   142,090.22/196,072.06 = 91,012.82/x
3. Step 3: Cross multiply
   142,090.22x = 196,072.06 × 91,012.82
4. Step 4: Simplify right side
   142,090.22x = 17,845,071,103.81
5. Step 5: Solve for x
   x = 17,845,071,103.81/142,090.22
6. Step 6: Final answer
   x = 125,589.72