Finding the Fourth Proportional to 117,123.59, 161,630.61 and 63,408.61

Step by Step Solution

1. Step 1: Write the proportion equation
   117,123.59 : 161,630.61 = 63,408.61 : x
2. Step 2: Convert to fraction form
   117,123.59/161,630.61 = 63,408.61/x
3. Step 3: Cross multiply
   117,123.59x = 161,630.61 × 63,408.61
4. Step 4: Simplify right side
   117,123.59x = 10,248,771,368.64
5. Step 5: Solve for x
   x = 10,248,771,368.64/117,123.59
6. Step 6: Final answer
   x = 87,503.91