Finding the Fourth Proportional to 152,620.78, 210,615.62 and 84,637.69

Step by Step Solution

1. Step 1: Write the proportion equation
   152,620.78 : 210,615.62 = 84,637.69 : x
2. Step 2: Convert to fraction form
   152,620.78/210,615.62 = 84,637.69/x
3. Step 3: Cross multiply
   152,620.78x = 210,615.62 × 84,637.69
4. Step 4: Simplify right side
   152,620.78x = 17,826,019,554.72
5. Step 5: Solve for x
   x = 17,826,019,554.72/152,620.78
6. Step 6: Final answer
   x = 116,799.43