Finding the Fourth Proportional to 78,725.83, 118,088.31 and 19,561.48

Step by Step Solution

1. Step 1: Write the proportion equation
   78,725.83 : 118,088.31 = 19,561.48 : x
2. Step 2: Convert to fraction form
   78,725.83/118,088.31 = 19,561.48/x
3. Step 3: Cross multiply
   78,725.83x = 118,088.31 × 19,561.48
4. Step 4: Simplify right side
   78,725.83x = 2,309,982,114.30
5. Step 5: Solve for x
   x = 2,309,982,114.30/78,725.83
6. Step 6: Final answer
   x = 29,342.11