Finding the Fourth Proportional to 48,128.58, 72,148.59 and 21,460.41

Step by Step Solution

1. Step 1: Write the proportion equation
   48,128.58 : 72,148.59 = 21,460.41 : x
2. Step 2: Convert to fraction form
   48,128.58/72,148.59 = 21,460.41/x
3. Step 3: Cross multiply
   48,128.58x = 72,148.59 × 21,460.41
4. Step 4: Simplify right side
   48,128.58x = 1,548,338,322.32
5. Step 5: Solve for x
   x = 1,548,338,322.32/48,128.58
6. Step 6: Final answer
   x = 32,170.87