Finding the Fourth Proportional to 82,798.86, 123,816.78 and 61,491.81

Step by Step Solution

1. Step 1: Write the proportion equation
   82,798.86 : 123,816.78 = 61,491.81 : x
2. Step 2: Convert to fraction form
   82,798.86/123,816.78 = 61,491.81/x
3. Step 3: Cross multiply
   82,798.86x = 123,816.78 × 61,491.81
4. Step 4: Simplify right side
   82,798.86x = 7,613,717,910.57
5. Step 5: Solve for x
   x = 7,613,717,910.57/82,798.86
6. Step 6: Final answer
   x = 91,954.38