Finding the Fourth Proportional to 73,602.72, 110,422.74 and 21,012.42

Step by Step Solution

1. Step 1: Write the proportion equation
   73,602.72 : 110,422.74 = 21,012.42 : x
2. Step 2: Convert to fraction form
   73,602.72/110,422.74 = 21,012.42/x
3. Step 3: Cross multiply
   73,602.72x = 110,422.74 × 21,012.42
4. Step 4: Simplify right side
   73,602.72x = 2,320,248,990.43
5. Step 5: Solve for x
   x = 2,320,248,990.43/73,602.72
6. Step 6: Final answer
   x = 31,523.96