Finding the Fourth Proportional to 78,485.10, 117,725.01 and 34,111.85

Step by Step Solution

1. Step 1: Write the proportion equation
   78,485.10 : 117,725.01 = 34,111.85 : x
2. Step 2: Convert to fraction form
   78,485.10/117,725.01 = 34,111.85/x
3. Step 3: Cross multiply
   78,485.10x = 117,725.01 × 34,111.85
4. Step 4: Simplify right side
   78,485.10x = 4,015,817,293.74
5. Step 5: Solve for x
   x = 4,015,817,293.74/78,485.10
6. Step 6: Final answer
   x = 51,166.62