Finding the Fourth Proportional to 72,128.34, 108,184.14 and 19,541.79

Step by Step Solution

1. Step 1: Write the proportion equation
   72,128.34 : 108,184.14 = 19,541.79 : x
2. Step 2: Convert to fraction form
   72,128.34/108,184.14 = 19,541.79/x
3. Step 3: Cross multiply
   72,128.34x = 108,184.14 × 19,541.79
4. Step 4: Simplify right side
   72,128.34x = 2,114,111,745.21
5. Step 5: Solve for x
   x = 2,114,111,745.21/72,128.34
6. Step 6: Final answer
   x = 29,310.42