Finding the Fourth Proportional to 109,520.89, 151,207.25 and 83,978.19

Step by Step Solution

1. Step 1: Write the proportion equation
   109,520.89 : 151,207.25 = 83,978.19 : x
2. Step 2: Convert to fraction form
   109,520.89/151,207.25 = 83,978.19/x
3. Step 3: Cross multiply
   109,520.89x = 151,207.25 × 83,978.19
4. Step 4: Simplify right side
   109,520.89x = 12,698,110,749.99
5. Step 5: Solve for x
   x = 12,698,110,749.99/109,520.89
6. Step 6: Final answer
   x = 115,942.37