Finding the Fourth Proportional to 152,164.47, 209,968.74 and 87,654.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,164.47 : 209,968.74 = 87,654.72 : x
2. Step 2: Convert to fraction form
   152,164.47/209,968.74 = 87,654.72/x
3. Step 3: Cross multiply
   152,164.47x = 209,968.74 × 87,654.72
4. Step 4: Simplify right side
   152,164.47x = 18,404,751,113.45
5. Step 5: Solve for x
   x = 18,404,751,113.45/152,164.47
6. Step 6: Final answer
   x = 120,953.01