Finding the Fourth Proportional to 75,061.18, 103,669.46 and 51,146.34

Step by Step Solution

1. Step 1: Write the proportion equation
   75,061.18 : 103,669.46 = 51,146.34 : x
2. Step 2: Convert to fraction form
   75,061.18/103,669.46 = 51,146.34/x
3. Step 3: Cross multiply
   75,061.18x = 103,669.46 × 51,146.34
4. Step 4: Simplify right side
   75,061.18x = 5,302,313,448.78
5. Step 5: Solve for x
   x = 5,302,313,448.78/75,061.18
6. Step 6: Final answer
   x = 70,639.89