Finding the Fourth Proportional to 79,781.72, 110,089.86 and 45,781.16

Step by Step Solution

1. Step 1: Write the proportion equation
   79,781.72 : 110,089.86 = 45,781.16 : x
2. Step 2: Convert to fraction form
   79,781.72/110,089.86 = 45,781.16/x
3. Step 3: Cross multiply
   79,781.72x = 110,089.86 × 45,781.16
4. Step 4: Simplify right side
   79,781.72x = 5,040,041,495.04
5. Step 5: Solve for x
   x = 5,040,041,495.04/79,781.72
6. Step 6: Final answer
   x = 63,172.89