Finding the Fourth Proportional to 73,688.04, 110,499.60 and 21,085.56

Step by Step Solution

1. Step 1: Write the proportion equation
   73,688.04 : 110,499.60 = 21,085.56 : x
2. Step 2: Convert to fraction form
   73,688.04/110,499.60 = 21,085.56/x
3. Step 3: Cross multiply
   73,688.04x = 110,499.60 × 21,085.56
4. Step 4: Simplify right side
   73,688.04x = 2,329,945,945.78
5. Step 5: Solve for x
   x = 2,329,945,945.78/73,688.04
6. Step 6: Final answer
   x = 31,619.05