Finding the Fourth Proportional to 117,788.25, 162,484.59 and 81,915.93

Step by Step Solution

1. Step 1: Write the proportion equation
   117,788.25 : 162,484.59 = 81,915.93 : x
2. Step 2: Convert to fraction form
   117,788.25/162,484.59 = 81,915.93/x
3. Step 3: Cross multiply
   117,788.25x = 162,484.59 × 81,915.93
4. Step 4: Simplify right side
   117,788.25x = 13,310,076,300.52
5. Step 5: Solve for x
   x = 13,310,076,300.52/117,788.25
6. Step 6: Final answer
   x = 113,000.03