Finding the Fourth Proportional to 112,637.30, 155,474.06 and 64,922.40

Step by Step Solution

1. Step 1: Write the proportion equation
   112,637.30 : 155,474.06 = 64,922.40 : x
2. Step 2: Convert to fraction form
   112,637.30/155,474.06 = 64,922.40/x
3. Step 3: Cross multiply
   112,637.30x = 155,474.06 × 64,922.40
4. Step 4: Simplify right side
   112,637.30x = 10,093,748,788.33
5. Step 5: Solve for x
   x = 10,093,748,788.33/112,637.30
6. Step 6: Final answer
   x = 89,612.85