Finding the Fourth Proportional to 191,071.43, 263,675.60 and 105,028.55

Step by Step Solution

1. Step 1: Write the proportion equation
   191,071.43 : 263,675.60 = 105,028.55 : x
2. Step 2: Convert to fraction form
   191,071.43/263,675.60 = 105,028.55/x
3. Step 3: Cross multiply
   191,071.43x = 263,675.60 × 105,028.55
4. Step 4: Simplify right side
   191,071.43x = 27,693,466,072.43
5. Step 5: Solve for x
   x = 27,693,466,072.43/191,071.43
6. Step 6: Final answer
   x = 144,937.76