Finding the Fourth Proportional to 90,054.72, 135,118.80 and 37,454.40

Step by Step Solution

1. Step 1: Write the proportion equation
   90,054.72 : 135,118.80 = 37,454.40 : x
2. Step 2: Convert to fraction form
   90,054.72/135,118.80 = 37,454.40/x
3. Step 3: Cross multiply
   90,054.72x = 135,118.80 × 37,454.40
4. Step 4: Simplify right side
   90,054.72x = 5,060,793,582.72
5. Step 5: Solve for x
   x = 5,060,793,582.72/90,054.72
6. Step 6: Final answer
   x = 56,196.87