Finding the Fourth Proportional to 112,733.96, 155,572.56 and 64,987.04

Step by Step Solution

1. Step 1: Write the proportion equation
   112,733.96 : 155,572.56 = 64,987.04 : x
2. Step 2: Convert to fraction form
   112,733.96/155,572.56 = 64,987.04/x
3. Step 3: Cross multiply
   112,733.96x = 155,572.56 × 64,987.04
4. Step 4: Simplify right side
   112,733.96x = 10,110,200,179.62
5. Step 5: Solve for x
   x = 10,110,200,179.62/112,733.96
6. Step 6: Final answer
   x = 89,681.94