Finding the Fourth Proportional to 79,780.72, 110,088.48 and 45,780.16

Step by Step Solution

1. Step 1: Write the proportion equation
   79,780.72 : 110,088.48 = 45,780.16 : x
2. Step 2: Convert to fraction form
   79,780.72/110,088.48 = 45,780.16/x
3. Step 3: Cross multiply
   79,780.72x = 110,088.48 × 45,780.16
4. Step 4: Simplify right side
   79,780.72x = 5,039,868,228.56
5. Step 5: Solve for x
   x = 5,039,868,228.56/79,780.72
6. Step 6: Final answer
   x = 63,171.51