Finding the Fourth Proportional to 117,531, 176,179.86 and 55,089.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,531 : 176,179.86 = 55,089.72 : x
2. Step 2: Convert to fraction form
   117,531/176,179.86 = 55,089.72/x
3. Step 3: Cross multiply
   117,531x = 176,179.86 × 55,089.72
4. Step 4: Simplify right side
   117,531x = 9,705,699,157.04
5. Step 5: Solve for x
   x = 9,705,699,157.04/117,531
6. Step 6: Final answer
   x = 82,579.91