Finding the Fourth Proportional to 117,485.60, 162,129.58 and 63,770.15

Step by Step Solution

1. Step 1: Write the proportion equation
   117,485.60 : 162,129.58 = 63,770.15 : x
2. Step 2: Convert to fraction form
   117,485.60/162,129.58 = 63,770.15/x
3. Step 3: Cross multiply
   117,485.60x = 162,129.58 × 63,770.15
4. Step 4: Simplify right side
   117,485.60x = 10,339,026,825.39
5. Step 5: Solve for x
   x = 10,339,026,825.39/117,485.60
6. Step 6: Final answer
   x = 88,002.50