Finding the Fourth Proportional to 112,544.83, 155,368.27 and 86,993.45

Step by Step Solution

1. Step 1: Write the proportion equation
   112,544.83 : 155,368.27 = 86,993.45 : x
2. Step 2: Convert to fraction form
   112,544.83/155,368.27 = 86,993.45/x
3. Step 3: Cross multiply
   112,544.83x = 155,368.27 × 86,993.45
4. Step 4: Simplify right side
   112,544.83x = 13,516,021,827.83
5. Step 5: Solve for x
   x = 13,516,021,827.83/112,544.83
6. Step 6: Final answer
   x = 120,094.56