Finding the Fourth Proportional to 51,111.30, 70,521.54 and 42,965.88

Step by Step Solution

1. Step 1: Write the proportion equation
   51,111.30 : 70,521.54 = 42,965.88 : x
2. Step 2: Convert to fraction form
   51,111.30/70,521.54 = 42,965.88/x
3. Step 3: Cross multiply
   51,111.30x = 70,521.54 × 42,965.88
4. Step 4: Simplify right side
   51,111.30x = 3,030,019,457.62
5. Step 5: Solve for x
   x = 3,030,019,457.62/51,111.30
6. Step 6: Final answer
   x = 59,282.78