Finding the Fourth Proportional to 47,077.98, 64,967.32 and 28,215.12

Step by Step Solution

1. Step 1: Write the proportion equation
   47,077.98 : 64,967.32 = 28,215.12 : x
2. Step 2: Convert to fraction form
   47,077.98/64,967.32 = 28,215.12/x
3. Step 3: Cross multiply
   47,077.98x = 64,967.32 × 28,215.12
4. Step 4: Simplify right side
   47,077.98x = 1,833,060,729.88
5. Step 5: Solve for x
   x = 1,833,060,729.88/47,077.98
6. Step 6: Final answer
   x = 38,936.69