Finding the Fourth Proportional to 82,192.84, 123,328.25 and 56,931.19

Step by Step Solution

1. Step 1: Write the proportion equation
   82,192.84 : 123,328.25 = 56,931.19 : x
2. Step 2: Convert to fraction form
   82,192.84/123,328.25 = 56,931.19/x
3. Step 3: Cross multiply
   82,192.84x = 123,328.25 × 56,931.19
4. Step 4: Simplify right side
   82,192.84x = 7,021,224,347.35
5. Step 5: Solve for x
   x = 7,021,224,347.35/82,192.84
6. Step 6: Final answer
   x = 85,423.80