Finding the Fourth Proportional to 83,666.27, 115,426.05 and 53,443.76

Step by Step Solution

1. Step 1: Write the proportion equation
   83,666.27 : 115,426.05 = 53,443.76 : x
2. Step 2: Convert to fraction form
   83,666.27/115,426.05 = 53,443.76/x
3. Step 3: Cross multiply
   83,666.27x = 115,426.05 × 53,443.76
4. Step 4: Simplify right side
   83,666.27x = 6,168,801,536.82
5. Step 5: Solve for x
   x = 6,168,801,536.82/83,666.27
6. Step 6: Final answer
   x = 73,731.05