Finding the Fourth Proportional to 73,630.50, 110,431.17 and 21,030.72

Step by Step Solution

1. Step 1: Write the proportion equation
   73,630.50 : 110,431.17 = 21,030.72 : x
2. Step 2: Convert to fraction form
   73,630.50/110,431.17 = 21,030.72/x
3. Step 3: Cross multiply
   73,630.50x = 110,431.17 × 21,030.72
4. Step 4: Simplify right side
   73,630.50x = 2,322,447,015.54
5. Step 5: Solve for x
   x = 2,322,447,015.54/73,630.50
6. Step 6: Final answer
   x = 31,541.92