Finding the Fourth Proportional to 47,077.87, 70,871.32 and 42,888.05

Step by Step Solution

1. Step 1: Write the proportion equation
   47,077.87 : 70,871.32 = 42,888.05 : x
2. Step 2: Convert to fraction form
   47,077.87/70,871.32 = 42,888.05/x
3. Step 3: Cross multiply
   47,077.87x = 70,871.32 × 42,888.05
4. Step 4: Simplify right side
   47,077.87x = 3,039,532,715.73
5. Step 5: Solve for x
   x = 3,039,532,715.73/47,077.87
6. Step 6: Final answer
   x = 64,563.94