Finding the Fourth Proportional to 79,705.81, 109,873.83 and 65,534.05

Step by Step Solution

1. Step 1: Write the proportion equation
   79,705.81 : 109,873.83 = 65,534.05 : x
2. Step 2: Convert to fraction form
   79,705.81/109,873.83 = 65,534.05/x
3. Step 3: Cross multiply
   79,705.81x = 109,873.83 × 65,534.05
4. Step 4: Simplify right side
   79,705.81x = 7,200,477,068.91
5. Step 5: Solve for x
   x = 7,200,477,068.91/79,705.81
6. Step 6: Final answer
   x = 90,338.17