Finding the Fourth Proportional to 311,333.31, 429,672.33 and 190,555.02

Step by Step Solution

1. Step 1: Write the proportion equation
   311,333.31 : 429,672.33 = 190,555.02 : x
2. Step 2: Convert to fraction form
   311,333.31/429,672.33 = 190,555.02/x
3. Step 3: Cross multiply
   311,333.31x = 429,672.33 × 190,555.02
4. Step 4: Simplify right side
   311,333.31x = 81,876,219,436.60
5. Step 5: Solve for x
   x = 81,876,219,436.60/311,333.31
6. Step 6: Final answer
   x = 262,985.74