Finding the Fourth Proportional to 61,278.72, 91,788.81 and 28,026.73

Step by Step Solution

1. Step 1: Write the proportion equation
   61,278.72 : 91,788.81 = 28,026.73 : x
2. Step 2: Convert to fraction form
   61,278.72/91,788.81 = 28,026.73/x
3. Step 3: Cross multiply
   61,278.72x = 91,788.81 × 28,026.73
4. Step 4: Simplify right side
   61,278.72x = 2,572,540,194.89
5. Step 5: Solve for x
   x = 2,572,540,194.89/61,278.72
6. Step 6: Final answer
   x = 41,980.97