Finding the Fourth Proportional to 117,557, 162,278.30 and 79,368.25

Step by Step Solution

1. Step 1: Write the proportion equation
   117,557 : 162,278.30 = 79,368.25 : x
2. Step 2: Convert to fraction form
   117,557/162,278.30 = 79,368.25/x
3. Step 3: Cross multiply
   117,557x = 162,278.30 × 79,368.25
4. Step 4: Simplify right side
   117,557x = 12,879,744,683.98
5. Step 5: Solve for x
   x = 12,879,744,683.98/117,557
6. Step 6: Final answer
   x = 109,561.70