Finding the Fourth Proportional to 191,385.30, 263,837.98 and 134,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   191,385.30 : 263,837.98 = 134,620.50 : x
2. Step 2: Convert to fraction form
   191,385.30/263,837.98 = 134,620.50/x
3. Step 3: Cross multiply
   191,385.30x = 263,837.98 × 134,620.50
4. Step 4: Simplify right side
   191,385.30x = 35,518,000,786.59
5. Step 5: Solve for x
   x = 35,518,000,786.59/191,385.30
6. Step 6: Final answer
   x = 185,583.75