Finding the Fourth Proportional to 64,870.48, 89,521.40 and 35,062.48

Step by Step Solution

1. Step 1: Write the proportion equation
   64,870.48 : 89,521.40 = 35,062.48 : x
2. Step 2: Convert to fraction form
   64,870.48/89,521.40 = 35,062.48/x
3. Step 3: Cross multiply
   64,870.48x = 89,521.40 × 35,062.48
4. Step 4: Simplify right side
   64,870.48x = 3,138,842,297.07
5. Step 5: Solve for x
   x = 3,138,842,297.07/64,870.48
6. Step 6: Final answer
   x = 48,386.30