Finding the Fourth Proportional to 130,338.47, 195,172.59 and 90,300.42

Step by Step Solution

1. Step 1: Write the proportion equation
   130,338.47 : 195,172.59 = 90,300.42 : x
2. Step 2: Convert to fraction form
   130,338.47/195,172.59 = 90,300.42/x
3. Step 3: Cross multiply
   130,338.47x = 195,172.59 × 90,300.42
4. Step 4: Simplify right side
   130,338.47x = 17,624,166,680.17
5. Step 5: Solve for x
   x = 17,624,166,680.17/130,338.47
6. Step 6: Final answer
   x = 135,218.46