Finding the Fourth Proportional to 83,421.16, 115,123.42 and 47,119.72

Step by Step Solution

1. Step 1: Write the proportion equation
   83,421.16 : 115,123.42 = 47,119.72 : x
2. Step 2: Convert to fraction form
   83,421.16/115,123.42 = 47,119.72/x
3. Step 3: Cross multiply
   83,421.16x = 115,123.42 × 47,119.72
4. Step 4: Simplify right side
   83,421.16x = 5,424,583,315.84
5. Step 5: Solve for x
   x = 5,424,583,315.84/83,421.16
6. Step 6: Final answer
   x = 65,026.47