Finding the Fourth Proportional to 191,636.69, 286,107.54 and 146,421.37

Step by Step Solution

1. Step 1: Write the proportion equation
   191,636.69 : 286,107.54 = 146,421.37 : x
2. Step 2: Convert to fraction form
   191,636.69/286,107.54 = 146,421.37/x
3. Step 3: Cross multiply
   191,636.69x = 286,107.54 × 146,421.37
4. Step 4: Simplify right side
   191,636.69x = 41,892,258,606.30
5. Step 5: Solve for x
   x = 41,892,258,606.30/191,636.69
6. Step 6: Final answer
   x = 218,602.50