Finding the Fourth Proportional to 90,928.17, 136,413.72 and 28,598.67

Step by Step Solution

1. Step 1: Write the proportion equation
   90,928.17 : 136,413.72 = 28,598.67 : x
2. Step 2: Convert to fraction form
   90,928.17/136,413.72 = 28,598.67/x
3. Step 3: Cross multiply
   90,928.17x = 136,413.72 × 28,598.67
4. Step 4: Simplify right side
   90,928.17x = 3,901,250,961.75
5. Step 5: Solve for x
   x = 3,901,250,961.75/90,928.17
6. Step 6: Final answer
   x = 42,904.76