Finding the Fourth Proportional to 51,039.02, 70,415.18 and 30,888.56

Step by Step Solution

1. Step 1: Write the proportion equation
   51,039.02 : 70,415.18 = 30,888.56 : x
2. Step 2: Convert to fraction form
   51,039.02/70,415.18 = 30,888.56/x
3. Step 3: Cross multiply
   51,039.02x = 70,415.18 × 30,888.56
4. Step 4: Simplify right side
   51,039.02x = 2,175,023,005.82
5. Step 5: Solve for x
   x = 2,175,023,005.82/51,039.02
6. Step 6: Final answer
   x = 42,614.91