Finding the Fourth Proportional to 231,279.73, 347,050.83 and 91,136.77

Step by Step Solution

1. Step 1: Write the proportion equation
   231,279.73 : 347,050.83 = 91,136.77 : x
2. Step 2: Convert to fraction form
   231,279.73/347,050.83 = 91,136.77/x
3. Step 3: Cross multiply
   231,279.73x = 347,050.83 × 91,136.77
4. Step 4: Simplify right side
   231,279.73x = 31,629,091,672.02
5. Step 5: Solve for x
   x = 31,629,091,672.02/231,279.73
6. Step 6: Final answer
   x = 136,756.87