Finding the Fourth Proportional to 65,088, 89,821.50 and 35,280

Step by Step Solution

1. Step 1: Write the proportion equation
   65,088 : 89,821.50 = 35,280 : x
2. Step 2: Convert to fraction form
   65,088/89,821.50 = 35,280/x
3. Step 3: Cross multiply
   65,088x = 89,821.50 × 35,280
4. Step 4: Simplify right side
   65,088x = 3,168,902,520
5. Step 5: Solve for x
   x = 3,168,902,520/65,088
6. Step 6: Final answer
   x = 48,686.43