Finding the Fourth Proportional to 119,485.18, 164,805.58 and 78,636.29

Step by Step Solution

1. Step 1: Write the proportion equation
   119,485.18 : 164,805.58 = 78,636.29 : x
2. Step 2: Convert to fraction form
   119,485.18/164,805.58 = 78,636.29/x
3. Step 3: Cross multiply
   119,485.18x = 164,805.58 × 78,636.29
4. Step 4: Simplify right side
   119,485.18x = 12,959,699,382.50
5. Step 5: Solve for x
   x = 12,959,699,382.50/119,485.18
6. Step 6: Final answer
   x = 108,462.82