Finding the Fourth Proportional to 137,960.84, 190,386.72 and 80,603.53

Step by Step Solution

1. Step 1: Write the proportion equation
   137,960.84 : 190,386.72 = 80,603.53 : x
2. Step 2: Convert to fraction form
   137,960.84/190,386.72 = 80,603.53/x
3. Step 3: Cross multiply
   137,960.84x = 190,386.72 × 80,603.53
4. Step 4: Simplify right side
   137,960.84x = 15,345,841,221.15
5. Step 5: Solve for x
   x = 15,345,841,221.15/137,960.84
6. Step 6: Final answer
   x = 111,233.31