Finding the Fourth Proportional to 106,942.28, 147,591.34 and 61,621.98

Step by Step Solution

1. Step 1: Write the proportion equation
   106,942.28 : 147,591.34 = 61,621.98 : x
2. Step 2: Convert to fraction form
   106,942.28/147,591.34 = 61,621.98/x
3. Step 3: Cross multiply
   106,942.28x = 147,591.34 × 61,621.98
4. Step 4: Simplify right side
   106,942.28x = 9,094,870,601.65
5. Step 5: Solve for x
   x = 9,094,870,601.65/106,942.28
6. Step 6: Final answer
   x = 85,044.67