Finding the Fourth Proportional to 79,688.08, 109,848.72 and 65,516.32

Step by Step Solution

1. Step 1: Write the proportion equation
   79,688.08 : 109,848.72 = 65,516.32 : x
2. Step 2: Convert to fraction form
   79,688.08/109,848.72 = 65,516.32/x
3. Step 3: Cross multiply
   79,688.08x = 109,848.72 × 65,516.32
4. Step 4: Simplify right side
   79,688.08x = 7,196,883,891.11
5. Step 5: Solve for x
   x = 7,196,883,891.11/79,688.08
6. Step 6: Final answer
   x = 90,313.18