Finding the Fourth Proportional to 48,300.42, 72,450.88 and 21,986.76

Step by Step Solution

1. Step 1: Write the proportion equation
   48,300.42 : 72,450.88 = 21,986.76 : x
2. Step 2: Convert to fraction form
   48,300.42/72,450.88 = 21,986.76/x
3. Step 3: Cross multiply
   48,300.42x = 72,450.88 × 21,986.76
4. Step 4: Simplify right side
   48,300.42x = 1,592,960,110.35
5. Step 5: Solve for x
   x = 1,592,960,110.35/48,300.42
6. Step 6: Final answer
   x = 32,980.25