Finding the Fourth Proportional to 117,861.90, 162,648.93 and 64,146.90

Step by Step Solution

1. Step 1: Write the proportion equation
   117,861.90 : 162,648.93 = 64,146.90 : x
2. Step 2: Convert to fraction form
   117,861.90/162,648.93 = 64,146.90/x
3. Step 3: Cross multiply
   117,861.90x = 162,648.93 × 64,146.90
4. Step 4: Simplify right side
   117,861.90x = 10,433,424,647.82
5. Step 5: Solve for x
   x = 10,433,424,647.82/117,861.90
6. Step 6: Final answer
   x = 88,522.45