Finding the Fourth Proportional to 91,976.64, 137,969.82 and 39,333.12

Step by Step Solution

1. Step 1: Write the proportion equation
   91,976.64 : 137,969.82 = 39,333.12 : x
2. Step 2: Convert to fraction form
   91,976.64/137,969.82 = 39,333.12/x
3. Step 3: Cross multiply
   91,976.64x = 137,969.82 × 39,333.12
4. Step 4: Simplify right side
   91,976.64x = 5,426,783,486.44
5. Step 5: Solve for x
   x = 5,426,783,486.44/91,976.64
6. Step 6: Final answer
   x = 59,001.76