Finding the Fourth Proportional to 133,377.30, 199,628.55 and 103,634.10

Step by Step Solution

1. Step 1: Write the proportion equation
   133,377.30 : 199,628.55 = 103,634.10 : x
2. Step 2: Convert to fraction form
   133,377.30/199,628.55 = 103,634.10/x
3. Step 3: Cross multiply
   133,377.30x = 199,628.55 × 103,634.10
4. Step 4: Simplify right side
   133,377.30x = 20,688,325,113.56
5. Step 5: Solve for x
   x = 20,688,325,113.56/133,377.30
6. Step 6: Final answer
   x = 155,111.29