Finding the Fourth Proportional to 105,428.01, 158,235.57 and 49,298.67

Step by Step Solution

1. Step 1: Write the proportion equation
   105,428.01 : 158,235.57 = 49,298.67 : x
2. Step 2: Convert to fraction form
   105,428.01/158,235.57 = 49,298.67/x
3. Step 3: Cross multiply
   105,428.01x = 158,235.57 × 49,298.67
4. Step 4: Simplify right side
   105,428.01x = 7,800,803,147.69
5. Step 5: Solve for x
   x = 7,800,803,147.69/105,428.01
6. Step 6: Final answer
   x = 73,991.75