Finding the Fourth Proportional to 66,134.03, 91,202.79 and 51,002.72

Step by Step Solution

1. Step 1: Write the proportion equation
   66,134.03 : 91,202.79 = 51,002.72 : x
2. Step 2: Convert to fraction form
   66,134.03/91,202.79 = 51,002.72/x
3. Step 3: Cross multiply
   66,134.03x = 91,202.79 × 51,002.72
4. Step 4: Simplify right side
   66,134.03x = 4,651,590,361.59
5. Step 5: Solve for x
   x = 4,651,590,361.59/66,134.03
6. Step 6: Final answer
   x = 70,335.81