Finding the Fourth Proportional to 70,521, 105,777.59 and 51,565.07

Step by Step Solution

1. Step 1: Write the proportion equation
   70,521 : 105,777.59 = 51,565.07 : x
2. Step 2: Convert to fraction form
   70,521/105,777.59 = 51,565.07/x
3. Step 3: Cross multiply
   70,521x = 105,777.59 × 51,565.07
4. Step 4: Simplify right side
   70,521x = 5,454,428,046.07
5. Step 5: Solve for x
   x = 5,454,428,046.07/70,521
6. Step 6: Final answer
   x = 77,344.73