Finding the Fourth Proportional to 112,722.96, 155,557.38 and 64,976.04

Step by Step Solution

1. Step 1: Write the proportion equation
   112,722.96 : 155,557.38 = 64,976.04 : x
2. Step 2: Convert to fraction form
   112,722.96/155,557.38 = 64,976.04/x
3. Step 3: Cross multiply
   112,722.96x = 155,557.38 × 64,976.04
4. Step 4: Simplify right side
   112,722.96x = 10,107,502,545.18
5. Step 5: Solve for x
   x = 10,107,502,545.18/112,722.96
6. Step 6: Final answer
   x = 89,666.76