Finding the Fourth Proportional to 134,155.91, 185,131.78 and 72,899.39

Step by Step Solution

1. Step 1: Write the proportion equation
   134,155.91 : 185,131.78 = 72,899.39 : x
2. Step 2: Convert to fraction form
   134,155.91/185,131.78 = 72,899.39/x
3. Step 3: Cross multiply
   134,155.91x = 185,131.78 × 72,899.39
4. Step 4: Simplify right side
   134,155.91x = 13,495,994,112.20
5. Step 5: Solve for x
   x = 13,495,994,112.20/134,155.91
6. Step 6: Final answer
   x = 100,599.32