Finding the Fourth Proportional to 64,969.50, 89,657.91 and 35,161.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,969.50 : 89,657.91 = 35,161.50 : x
2. Step 2: Convert to fraction form
   64,969.50/89,657.91 = 35,161.50/x
3. Step 3: Cross multiply
   64,969.50x = 89,657.91 × 35,161.50
4. Step 4: Simplify right side
   64,969.50x = 3,152,506,602.47
5. Step 5: Solve for x
   x = 3,152,506,602.47/64,969.50
6. Step 6: Final answer
   x = 48,522.87