Finding the Fourth Proportional to 90,979.62, 136,495.82 and 37,661.77

Step by Step Solution

1. Step 1: Write the proportion equation
   90,979.62 : 136,495.82 = 37,661.77 : x
2. Step 2: Convert to fraction form
   90,979.62/136,495.82 = 37,661.77/x
3. Step 3: Cross multiply
   90,979.62x = 136,495.82 × 37,661.77
4. Step 4: Simplify right side
   90,979.62x = 5,140,674,178.80
5. Step 5: Solve for x
   x = 5,140,674,178.80/90,979.62
6. Step 6: Final answer
   x = 56,503.58