Finding the Fourth Proportional to 194,839, 268,877.82 and 105,415

Step by Step Solution

1. Step 1: Write the proportion equation
   194,839 : 268,877.82 = 105,415 : x
2. Step 2: Convert to fraction form
   194,839/268,877.82 = 105,415/x
3. Step 3: Cross multiply
   194,839x = 268,877.82 × 105,415
4. Step 4: Simplify right side
   194,839x = 28,343,755,395.30
5. Step 5: Solve for x
   x = 28,343,755,395.30/194,839
6. Step 6: Final answer
   x = 145,472.70