Finding the Fourth Proportional to 72,671.80, 109,077.30 and 37,636.60

Step by Step Solution

1. Step 1: Write the proportion equation
   72,671.80 : 109,077.30 = 37,636.60 : x
2. Step 2: Convert to fraction form
   72,671.80/109,077.30 = 37,636.60/x
3. Step 3: Cross multiply
   72,671.80x = 109,077.30 × 37,636.60
4. Step 4: Simplify right side
   72,671.80x = 4,105,298,709.18
5. Step 5: Solve for x
   x = 4,105,298,709.18/72,671.80
6. Step 6: Final answer
   x = 56,490.95