Finding the Fourth Proportional to 231,198.59, 346,994.72 and 91,055.63

Step by Step Solution

1. Step 1: Write the proportion equation
   231,198.59 : 346,994.72 = 91,055.63 : x
2. Step 2: Convert to fraction form
   231,198.59/346,994.72 = 91,055.63/x
3. Step 3: Cross multiply
   231,198.59x = 346,994.72 × 91,055.63
4. Step 4: Simplify right side
   231,198.59x = 31,595,820,646.02
5. Step 5: Solve for x
   x = 31,595,820,646.02/231,198.59
6. Step 6: Final answer
   x = 136,660.96