Finding the Fourth Proportional to 152,780.72, 210,837.48 and 84,797.72

Step by Step Solution

1. Step 1: Write the proportion equation
   152,780.72 : 210,837.48 = 84,797.72 : x
2. Step 2: Convert to fraction form
   152,780.72/210,837.48 = 84,797.72/x
3. Step 3: Cross multiply
   152,780.72x = 210,837.48 × 84,797.72
4. Step 4: Simplify right side
   152,780.72x = 17,878,537,594.55
5. Step 5: Solve for x
   x = 17,878,537,594.55/152,780.72
6. Step 6: Final answer
   x = 117,020.90