Finding the Fourth Proportional to 112,356.36, 154,903.86 and 86,543.82

Step by Step Solution

1. Step 1: Write the proportion equation
   112,356.36 : 154,903.86 = 86,543.82 : x
2. Step 2: Convert to fraction form
   112,356.36/154,903.86 = 86,543.82/x
3. Step 3: Cross multiply
   112,356.36x = 154,903.86 × 86,543.82
4. Step 4: Simplify right side
   112,356.36x = 13,405,971,777.15
5. Step 5: Solve for x
   x = 13,405,971,777.15/112,356.36
6. Step 6: Final answer
   x = 119,316.54