Finding the Fourth Proportional to 64,671.18, 89,228.73 and 37,820.31

Step by Step Solution

1. Step 1: Write the proportion equation
   64,671.18 : 89,228.73 = 37,820.31 : x
2. Step 2: Convert to fraction form
   64,671.18/89,228.73 = 37,820.31/x
3. Step 3: Cross multiply
   64,671.18x = 89,228.73 × 37,820.31
4. Step 4: Simplify right side
   64,671.18x = 3,374,658,229.51
5. Step 5: Solve for x
   x = 3,374,658,229.51/64,671.18
6. Step 6: Final answer
   x = 52,181.79