Finding the Fourth Proportional to 151,629.22, 209,181.72 and 91,164.88

Step by Step Solution

1. Step 1: Write the proportion equation
   151,629.22 : 209,181.72 = 91,164.88 : x
2. Step 2: Convert to fraction form
   151,629.22/209,181.72 = 91,164.88/x
3. Step 3: Cross multiply
   151,629.22x = 209,181.72 × 91,164.88
4. Step 4: Simplify right side
   151,629.22x = 19,070,026,401.99
5. Step 5: Solve for x
   x = 19,070,026,401.99/151,629.22
6. Step 6: Final answer
   x = 125,767.49