Finding the Fourth Proportional to 136,173.96, 187,906.88 and 78,801.89

Step by Step Solution

1. Step 1: Write the proportion equation
   136,173.96 : 187,906.88 = 78,801.89 : x
2. Step 2: Convert to fraction form
   136,173.96/187,906.88 = 78,801.89/x
3. Step 3: Cross multiply
   136,173.96x = 187,906.88 × 78,801.89
4. Step 4: Simplify right side
   136,173.96x = 14,807,417,954.78
5. Step 5: Solve for x
   x = 14,807,417,954.78/136,173.96
6. Step 6: Final answer
   x = 108,738.98