Finding the Fourth Proportional to 85,543.83, 128,313.59 and 23,212.71

Step by Step Solution

1. Step 1: Write the proportion equation
   85,543.83 : 128,313.59 = 23,212.71 : x
2. Step 2: Convert to fraction form
   85,543.83/128,313.59 = 23,212.71/x
3. Step 3: Cross multiply
   85,543.83x = 128,313.59 × 23,212.71
4. Step 4: Simplify right side
   85,543.83x = 2,978,506,037.67
5. Step 5: Solve for x
   x = 2,978,506,037.67/85,543.83
6. Step 6: Final answer
   x = 34,818.48