Finding the Fourth Proportional to 79,686.72, 109,962.72 and 47,848.32

Step by Step Solution

1. Step 1: Write the proportion equation
   79,686.72 : 109,962.72 = 47,848.32 : x
2. Step 2: Convert to fraction form
   79,686.72/109,962.72 = 47,848.32/x
3. Step 3: Cross multiply
   79,686.72x = 109,962.72 × 47,848.32
4. Step 4: Simplify right side
   79,686.72x = 5,261,531,414.63
5. Step 5: Solve for x
   x = 5,261,531,414.63/79,686.72
6. Step 6: Final answer
   x = 66,027.71