Finding the Fourth Proportional to 60,978.30, 91,496.21 and 21,553.98

Step by Step Solution

1. Step 1: Write the proportion equation
   60,978.30 : 91,496.21 = 21,553.98 : x
2. Step 2: Convert to fraction form
   60,978.30/91,496.21 = 21,553.98/x
3. Step 3: Cross multiply
   60,978.30x = 91,496.21 × 21,553.98
4. Step 4: Simplify right side
   60,978.30x = 1,972,107,372.65
5. Step 5: Solve for x
   x = 1,972,107,372.65/60,978.30
6. Step 6: Final answer
   x = 32,341.13