Finding the Fourth Proportional to 71,796.62, 99,109.97 and 51,113.45

Step by Step Solution

1. Step 1: Write the proportion equation
   71,796.62 : 99,109.97 = 51,113.45 : x
2. Step 2: Convert to fraction form
   71,796.62/99,109.97 = 51,113.45/x
3. Step 3: Cross multiply
   71,796.62x = 99,109.97 × 51,113.45
4. Step 4: Simplify right side
   71,796.62x = 5,065,852,496.10
5. Step 5: Solve for x
   x = 5,065,852,496.10/71,796.62
6. Step 6: Final answer
   x = 70,558.37