Finding the Fourth Proportional to 152,499.78, 210,464.40 and 84,531.48

Step by Step Solution

1. Step 1: Write the proportion equation
   152,499.78 : 210,464.40 = 84,531.48 : x
2. Step 2: Convert to fraction form
   152,499.78/210,464.40 = 84,531.48/x
3. Step 3: Cross multiply
   152,499.78x = 210,464.40 × 84,531.48
4. Step 4: Simplify right side
   152,499.78x = 17,790,867,219.31
5. Step 5: Solve for x
   x = 17,790,867,219.31/152,499.78
6. Step 6: Final answer
   x = 116,661.59