Finding the Fourth Proportional to 152,404.56, 210,269.40 and 98,730.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,404.56 : 210,269.40 = 98,730.72 : x
2. Step 2: Convert to fraction form
   152,404.56/210,269.40 = 98,730.72/x
3. Step 3: Cross multiply
   152,404.56x = 210,269.40 × 98,730.72
4. Step 4: Simplify right side
   152,404.56x = 20,760,049,255.97
5. Step 5: Solve for x
   x = 20,760,049,255.97/152,404.56
6. Step 6: Final answer
   x = 136,216.72