Finding the Fourth Proportional to 105,357.84, 158,160.24 and 83,186.16

Step by Step Solution

1. Step 1: Write the proportion equation
   105,357.84 : 158,160.24 = 83,186.16 : x
2. Step 2: Convert to fraction form
   105,357.84/158,160.24 = 83,186.16/x
3. Step 3: Cross multiply
   105,357.84x = 158,160.24 × 83,186.16
4. Step 4: Simplify right side
   105,357.84x = 13,156,743,030.28
5. Step 5: Solve for x
   x = 13,156,743,030.28/105,357.84
6. Step 6: Final answer
   x = 124,876.73