Finding the Fourth Proportional to 70,051.34, 105,148.49 and 51,275.61

Step by Step Solution

1. Step 1: Write the proportion equation
   70,051.34 : 105,148.49 = 51,275.61 : x
2. Step 2: Convert to fraction form
   70,051.34/105,148.49 = 51,275.61/x
3. Step 3: Cross multiply
   70,051.34x = 105,148.49 × 51,275.61
4. Step 4: Simplify right side
   70,051.34x = 5,391,552,311.40
5. Step 5: Solve for x
   x = 5,391,552,311.40/70,051.34
6. Step 6: Final answer
   x = 76,965.73