Finding the Fourth Proportional to 136,968.89, 189,035.82 and 78,824.39

Step by Step Solution

1. Step 1: Write the proportion equation
   136,968.89 : 189,035.82 = 78,824.39 : x
2. Step 2: Convert to fraction form
   136,968.89/189,035.82 = 78,824.39/x
3. Step 3: Cross multiply
   136,968.89x = 189,035.82 × 78,824.39
4. Step 4: Simplify right side
   136,968.89x = 14,900,632,254.47
5. Step 5: Solve for x
   x = 14,900,632,254.47/136,968.89
6. Step 6: Final answer
   x = 108,788.45