Finding the Fourth Proportional to 117,404.74, 175,885.66 and 90,980.31

Step by Step Solution

1. Step 1: Write the proportion equation
   117,404.74 : 175,885.66 = 90,980.31 : x
2. Step 2: Convert to fraction form
   117,404.74/175,885.66 = 90,980.31/x
3. Step 3: Cross multiply
   117,404.74x = 175,885.66 × 90,980.31
4. Step 4: Simplify right side
   117,404.74x = 16,002,131,871.35
5. Step 5: Solve for x
   x = 16,002,131,871.35/117,404.74
6. Step 6: Final answer
   x = 136,298.86