Finding the Fourth Proportional to 112,399.75, 155,109.82 and 61,411.38

Step by Step Solution

1. Step 1: Write the proportion equation
   112,399.75 : 155,109.82 = 61,411.38 : x
2. Step 2: Convert to fraction form
   112,399.75/155,109.82 = 61,411.38/x
3. Step 3: Cross multiply
   112,399.75x = 155,109.82 × 61,411.38
4. Step 4: Simplify right side
   112,399.75x = 9,525,508,097.75
5. Step 5: Solve for x
   x = 9,525,508,097.75/112,399.75
6. Step 6: Final answer
   x = 84,746.70