Finding the Fourth Proportional to 113,992.30, 157,348.74 and 78,300.46

Step by Step Solution

1. Step 1: Write the proportion equation
   113,992.30 : 157,348.74 = 78,300.46 : x
2. Step 2: Convert to fraction form
   113,992.30/157,348.74 = 78,300.46/x
3. Step 3: Cross multiply
   113,992.30x = 157,348.74 × 78,300.46
4. Step 4: Simplify right side
   113,992.30x = 12,320,478,722.42
5. Step 5: Solve for x
   x = 12,320,478,722.42/113,992.30
6. Step 6: Final answer
   x = 108,081.68