Finding the Fourth Proportional to 117,878.61, 162,675.99 and 72,582.72

Step by Step Solution

1. Step 1: Write the proportion equation
   117,878.61 : 162,675.99 = 72,582.72 : x
2. Step 2: Convert to fraction form
   117,878.61/162,675.99 = 72,582.72/x
3. Step 3: Cross multiply
   117,878.61x = 162,675.99 × 72,582.72
4. Step 4: Simplify right side
   117,878.61x = 11,807,465,832.89
5. Step 5: Solve for x
   x = 11,807,465,832.89/117,878.61
6. Step 6: Final answer
   x = 100,166.31