Finding the Fourth Proportional to 77,900, 107,499.72 and 43,910.48

Step by Step Solution

1. Step 1: Write the proportion equation
   77,900 : 107,499.72 = 43,910.48 : x
2. Step 2: Convert to fraction form
   77,900/107,499.72 = 43,910.48/x
3. Step 3: Cross multiply
   77,900x = 107,499.72 × 43,910.48
4. Step 4: Simplify right side
   77,900x = 4,720,364,305.07
5. Step 5: Solve for x
   x = 4,720,364,305.07/77,900
6. Step 6: Final answer
   x = 60,595.18