Finding the Fourth Proportional to 191,118.59, 263,746.58 and 105,081.30

Step by Step Solution

1. Step 1: Write the proportion equation
   191,118.59 : 263,746.58 = 105,081.30 : x
2. Step 2: Convert to fraction form
   191,118.59/263,746.58 = 105,081.30/x
3. Step 3: Cross multiply
   191,118.59x = 263,746.58 × 105,081.30
4. Step 4: Simplify right side
   191,118.59x = 27,714,833,562.63
5. Step 5: Solve for x
   x = 27,714,833,562.63/191,118.59
6. Step 6: Final answer
   x = 145,013.80