Finding the Fourth Proportional to 137,143.34, 189,181.59 and 79,776.20

Step by Step Solution

1. Step 1: Write the proportion equation
   137,143.34 : 189,181.59 = 79,776.20 : x
2. Step 2: Convert to fraction form
   137,143.34/189,181.59 = 79,776.20/x
3. Step 3: Cross multiply
   137,143.34x = 189,181.59 × 79,776.20
4. Step 4: Simplify right side
   137,143.34x = 15,092,188,833.11
5. Step 5: Solve for x
   x = 15,092,188,833.11/137,143.34
6. Step 6: Final answer
   x = 110,046.83