Finding the Fourth Proportional to 117,870.50, 162,664.72 and 64,158.98

Step by Step Solution

1. Step 1: Write the proportion equation
   117,870.50 : 162,664.72 = 64,158.98 : x
2. Step 2: Convert to fraction form
   117,870.50/162,664.72 = 64,158.98/x
3. Step 3: Cross multiply
   117,870.50x = 162,664.72 × 64,158.98
4. Step 4: Simplify right side
   117,870.50x = 10,436,402,517.19
5. Step 5: Solve for x
   x = 10,436,402,517.19/117,870.50
6. Step 6: Final answer
   x = 88,541.26