Finding the Fourth Proportional to 121,768.39, 182,670.81 and 42,868.72

Step by Step Solution

1. Step 1: Write the proportion equation
   121,768.39 : 182,670.81 = 42,868.72 : x
2. Step 2: Convert to fraction form
   121,768.39/182,670.81 = 42,868.72/x
3. Step 3: Cross multiply
   121,768.39x = 182,670.81 × 42,868.72
4. Step 4: Simplify right side
   121,768.39x = 7,830,863,806.06
5. Step 5: Solve for x
   x = 7,830,863,806.06/121,768.39
6. Step 6: Final answer
   x = 64,309.50