Finding the Fourth Proportional to 68,978.15, 103,412.55 and 37,813.40

Step by Step Solution

1. Step 1: Write the proportion equation
   68,978.15 : 103,412.55 = 37,813.40 : x
2. Step 2: Convert to fraction form
   68,978.15/103,412.55 = 37,813.40/x
3. Step 3: Cross multiply
   68,978.15x = 103,412.55 × 37,813.40
4. Step 4: Simplify right side
   68,978.15x = 3,910,380,118.17
5. Step 5: Solve for x
   x = 3,910,380,118.17/68,978.15
6. Step 6: Final answer
   x = 56,690.13