Finding the Fourth Proportional to 112,782.06, 155,644.41 and 64,397.09

Step by Step Solution

1. Step 1: Write the proportion equation
   112,782.06 : 155,644.41 = 64,397.09 : x
2. Step 2: Convert to fraction form
   112,782.06/155,644.41 = 64,397.09/x
3. Step 3: Cross multiply
   112,782.06x = 155,644.41 × 64,397.09
4. Step 4: Simplify right side
   112,782.06x = 10,023,046,300.54
5. Step 5: Solve for x
   x = 10,023,046,300.54/112,782.06
6. Step 6: Final answer
   x = 88,870.93