Finding the Fourth Proportional to 66,196.81, 91,329.24 and 37,513.45

Step by Step Solution

1. Step 1: Write the proportion equation
   66,196.81 : 91,329.24 = 37,513.45 : x
2. Step 2: Convert to fraction form
   66,196.81/91,329.24 = 37,513.45/x
3. Step 3: Cross multiply
   66,196.81x = 91,329.24 × 37,513.45
4. Step 4: Simplify right side
   66,196.81x = 3,426,074,878.28
5. Step 5: Solve for x
   x = 3,426,074,878.28/66,196.81
6. Step 6: Final answer
   x = 51,755.89