Finding the Fourth Proportional to 112,973.39, 155,887.06 and 67,640.51

Step by Step Solution

1. Step 1: Write the proportion equation
   112,973.39 : 155,887.06 = 67,640.51 : x
2. Step 2: Convert to fraction form
   112,973.39/155,887.06 = 67,640.51/x
3. Step 3: Cross multiply
   112,973.39x = 155,887.06 × 67,640.51
4. Step 4: Simplify right side
   112,973.39x = 10,544,280,240.80
5. Step 5: Solve for x
   x = 10,544,280,240.80/112,973.39
6. Step 6: Final answer
   x = 93,334.19