Finding the Fourth Proportional to 191,315.96, 286,783.51 and 91,359.29

Step by Step Solution

1. Step 1: Write the proportion equation
   191,315.96 : 286,783.51 = 91,359.29 : x
2. Step 2: Convert to fraction form
   191,315.96/286,783.51 = 91,359.29/x
3. Step 3: Cross multiply
   191,315.96x = 286,783.51 × 91,359.29
4. Step 4: Simplify right side
   191,315.96x = 26,200,337,400.51
5. Step 5: Solve for x
   x = 26,200,337,400.51/191,315.96
6. Step 6: Final answer
   x = 136,948.00