Finding the Fourth Proportional to 100,978.40, 151,371 and 37,781.36

Step by Step Solution

1. Step 1: Write the proportion equation
   100,978.40 : 151,371 = 37,781.36 : x
2. Step 2: Convert to fraction form
   100,978.40/151,371 = 37,781.36/x
3. Step 3: Cross multiply
   100,978.40x = 151,371 × 37,781.36
4. Step 4: Simplify right side
   100,978.40x = 5,719,002,244.56
5. Step 5: Solve for x
   x = 5,719,002,244.56/100,978.40
6. Step 6: Final answer
   x = 56,635.90