Finding the Fourth Proportional to 82,191.35, 123,100.18 and 64,310.57

Step by Step Solution

1. Step 1: Write the proportion equation
   82,191.35 : 123,100.18 = 64,310.57 : x
2. Step 2: Convert to fraction form
   82,191.35/123,100.18 = 64,310.57/x
3. Step 3: Cross multiply
   82,191.35x = 123,100.18 × 64,310.57
4. Step 4: Simplify right side
   82,191.35x = 7,916,642,889.88
5. Step 5: Solve for x
   x = 7,916,642,889.88/82,191.35
6. Step 6: Final answer
   x = 96,319.67