Finding the Fourth Proportional to 117,902.60, 162,704.61 and 64,187.51

Step by Step Solution

1. Step 1: Write the proportion equation
   117,902.60 : 162,704.61 = 64,187.51 : x
2. Step 2: Convert to fraction form
   117,902.60/162,704.61 = 64,187.51/x
3. Step 3: Cross multiply
   117,902.60x = 162,704.61 × 64,187.51
4. Step 4: Simplify right side
   117,902.60x = 10,443,602,967.90
5. Step 5: Solve for x
   x = 10,443,602,967.90/117,902.60
6. Step 6: Final answer
   x = 88,578.23