Finding the Fourth Proportional to 405,758.88, 608,638.56 and 152,970.72

Step by Step Solution

1. Step 1: Write the proportion equation
   405,758.88 : 608,638.56 = 152,970.72 : x
2. Step 2: Convert to fraction form
   405,758.88/608,638.56 = 152,970.72/x
3. Step 3: Cross multiply
   405,758.88x = 608,638.56 × 152,970.72
4. Step 4: Simplify right side
   405,758.88x = 93,103,878,742.96
5. Step 5: Solve for x
   x = 93,103,878,742.96/405,758.88
6. Step 6: Final answer
   x = 229,456.17