Finding the Fourth Proportional to 129,870.10, 194,477.10 and 103,626.10

Step by Step Solution

1. Step 1: Write the proportion equation
   129,870.10 : 194,477.10 = 103,626.10 : x
2. Step 2: Convert to fraction form
   129,870.10/194,477.10 = 103,626.10/x
3. Step 3: Cross multiply
   129,870.10x = 194,477.10 × 103,626.10
4. Step 4: Simplify right side
   129,870.10x = 20,152,903,412.31
5. Step 5: Solve for x
   x = 20,152,903,412.31/129,870.10
6. Step 6: Final answer
   x = 155,177.39