Finding the Fourth Proportional to 51,112.69, 70,539.06 and 30,970.42

Step by Step Solution

1. Step 1: Write the proportion equation
   51,112.69 : 70,539.06 = 30,970.42 : x
2. Step 2: Convert to fraction form
   51,112.69/70,539.06 = 30,970.42/x
3. Step 3: Cross multiply
   51,112.69x = 70,539.06 × 30,970.42
4. Step 4: Simplify right side
   51,112.69x = 2,184,624,314.61
5. Step 5: Solve for x
   x = 2,184,624,314.61/51,112.69
6. Step 6: Final answer
   x = 42,741.33