Finding the Fourth Proportional to 191,111.18, 263,733.59 and 105,071.62

Step by Step Solution

1. Step 1: Write the proportion equation
   191,111.18 : 263,733.59 = 105,071.62 : x
2. Step 2: Convert to fraction form
   191,111.18/263,733.59 = 105,071.62/x
3. Step 3: Cross multiply
   191,111.18x = 263,733.59 × 105,071.62
4. Step 4: Simplify right side
   191,111.18x = 27,710,915,024.36
5. Step 5: Solve for x
   x = 27,710,915,024.36/191,111.18
6. Step 6: Final answer
   x = 144,998.92