Finding the Fourth Proportional to 231,451.83, 347,308.83 and 91,308.87

Step by Step Solution

1. Step 1: Write the proportion equation
   231,451.83 : 347,308.83 = 91,308.87 : x
2. Step 2: Convert to fraction form
   231,451.83/347,308.83 = 91,308.87/x
3. Step 3: Cross multiply
   231,451.83x = 347,308.83 × 91,308.87
4. Step 4: Simplify right side
   231,451.83x = 31,712,376,808.32
5. Step 5: Solve for x
   x = 31,712,376,808.32/231,451.83
6. Step 6: Final answer
   x = 137,015.02