Finding the Fourth Proportional to 73,666.38, 110,404.79 and 64,139.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,666.38 : 110,404.79 = 64,139.72 : x
2. Step 2: Convert to fraction form
   73,666.38/110,404.79 = 64,139.72/x
3. Step 3: Cross multiply
   73,666.38x = 110,404.79 × 64,139.72
4. Step 4: Simplify right side
   73,666.38x = 7,081,331,685.06
5. Step 5: Solve for x
   x = 7,081,331,685.06/73,666.38
6. Step 6: Final answer
   x = 96,127.05