Finding the Fourth Proportional to 60,999.18, 91,504.71 and 18,877.56

Step by Step Solution

1. Step 1: Write the proportion equation
   60,999.18 : 91,504.71 = 18,877.56 : x
2. Step 2: Convert to fraction form
   60,999.18/91,504.71 = 18,877.56/x
3. Step 3: Cross multiply
   60,999.18x = 91,504.71 × 18,877.56
4. Step 4: Simplify right side
   60,999.18x = 1,727,385,653.31
5. Step 5: Solve for x
   x = 1,727,385,653.31/60,999.18
6. Step 6: Final answer
   x = 28,318.18