Finding the Fourth Proportional to 66,426, 91,663.29 and 37,358.72

Step by Step Solution

1. Step 1: Write the proportion equation
   66,426 : 91,663.29 = 37,358.72 : x
2. Step 2: Convert to fraction form
   66,426/91,663.29 = 37,358.72/x
3. Step 3: Cross multiply
   66,426x = 91,663.29 × 37,358.72
4. Step 4: Simplify right side
   66,426x = 3,424,423,185.39
5. Step 5: Solve for x
   x = 3,424,423,185.39/66,426
6. Step 6: Final answer
   x = 51,552.45