Finding the Fourth Proportional to 132,870.79, 183,369.86 and 76,290.67

Step by Step Solution

1. Step 1: Write the proportion equation
   132,870.79 : 183,369.86 = 76,290.67 : x
2. Step 2: Convert to fraction form
   132,870.79/183,369.86 = 76,290.67/x
3. Step 3: Cross multiply
   132,870.79x = 183,369.86 × 76,290.67
4. Step 4: Simplify right side
   132,870.79x = 13,989,409,477.21
5. Step 5: Solve for x
   x = 13,989,409,477.21/132,870.79
6. Step 6: Final answer
   x = 105,285.82