Finding the Fourth Proportional to 78,912.56, 118,369.15 and 19,748.07

Step by Step Solution

1. Step 1: Write the proportion equation
   78,912.56 : 118,369.15 = 19,748.07 : x
2. Step 2: Convert to fraction form
   78,912.56/118,369.15 = 19,748.07/x
3. Step 3: Cross multiply
   78,912.56x = 118,369.15 × 19,748.07
4. Step 4: Simplify right side
   78,912.56x = 2,337,562,210.67
5. Step 5: Solve for x
   x = 2,337,562,210.67/78,912.56
6. Step 6: Final answer
   x = 29,622.18