Finding the Fourth Proportional to 72,300.56, 108,447.64 and 19,710.05

Step by Step Solution

1. Step 1: Write the proportion equation
   72,300.56 : 108,447.64 = 19,710.05 : x
2. Step 2: Convert to fraction form
   72,300.56/108,447.64 = 19,710.05/x
3. Step 3: Cross multiply
   72,300.56x = 108,447.64 × 19,710.05
4. Step 4: Simplify right side
   72,300.56x = 2,137,507,815.27
5. Step 5: Solve for x
   x = 2,137,507,815.27/72,300.56
6. Step 6: Final answer
   x = 29,564.20