Finding the Fourth Proportional to 137,271.61, 189,434.90 and 76,842.37

Step by Step Solution

1. Step 1: Write the proportion equation
   137,271.61 : 189,434.90 = 76,842.37 : x
2. Step 2: Convert to fraction form
   137,271.61/189,434.90 = 76,842.37/x
3. Step 3: Cross multiply
   137,271.61x = 189,434.90 × 76,842.37
4. Step 4: Simplify right side
   137,271.61x = 14,556,627,105.61
5. Step 5: Solve for x
   x = 14,556,627,105.61/137,271.61
6. Step 6: Final answer
   x = 106,042.52