Finding the Fourth Proportional to 64,810.50, 89,438.49 and 35,002.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,810.50 : 89,438.49 = 35,002.50 : x
2. Step 2: Convert to fraction form
   64,810.50/89,438.49 = 35,002.50/x
3. Step 3: Cross multiply
   64,810.50x = 89,438.49 × 35,002.50
4. Step 4: Simplify right side
   64,810.50x = 3,130,570,746.23
5. Step 5: Solve for x
   x = 3,130,570,746.23/64,810.50
6. Step 6: Final answer
   x = 48,303.45