Finding the Fourth Proportional to 90,028.82, 135,072.40 and 43,275.62

Step by Step Solution

1. Step 1: Write the proportion equation
   90,028.82 : 135,072.40 = 43,275.62 : x
2. Step 2: Convert to fraction form
   90,028.82/135,072.40 = 43,275.62/x
3. Step 3: Cross multiply
   90,028.82x = 135,072.40 × 43,275.62
4. Step 4: Simplify right side
   90,028.82x = 5,845,341,854.89
5. Step 5: Solve for x
   x = 5,845,341,854.89/90,028.82
6. Step 6: Final answer
   x = 64,927.45