Finding the Fourth Proportional to 72,380.70, 108,567.72 and 19,790.06

Step by Step Solution

1. Step 1: Write the proportion equation
   72,380.70 : 108,567.72 = 19,790.06 : x
2. Step 2: Convert to fraction form
   72,380.70/108,567.72 = 19,790.06/x
3. Step 3: Cross multiply
   72,380.70x = 108,567.72 × 19,790.06
4. Step 4: Simplify right side
   72,380.70x = 2,148,561,150.02
5. Step 5: Solve for x
   x = 2,148,561,150.02/72,380.70
6. Step 6: Final answer
   x = 29,684.17