Finding the Fourth Proportional to 90,845.02, 136,273.29 and 28,517.98

Step by Step Solution

1. Step 1: Write the proportion equation
   90,845.02 : 136,273.29 = 28,517.98 : x
2. Step 2: Convert to fraction form
   90,845.02/136,273.29 = 28,517.98/x
3. Step 3: Cross multiply
   90,845.02x = 136,273.29 × 28,517.98
4. Step 4: Simplify right side
   90,845.02x = 3,886,238,958.75
5. Step 5: Solve for x
   x = 3,886,238,958.75/90,845.02
6. Step 6: Final answer
   x = 42,778.78