Finding the Fourth Proportional to 152,766.96, 210,820.67 and 84,788.31

Step by Step Solution

1. Step 1: Write the proportion equation
   152,766.96 : 210,820.67 = 84,788.31 : x
2. Step 2: Convert to fraction form
   152,766.96/210,820.67 = 84,788.31/x
3. Step 3: Cross multiply
   152,766.96x = 210,820.67 × 84,788.31
4. Step 4: Simplify right side
   152,766.96x = 17,875,128,322.37
5. Step 5: Solve for x
   x = 17,875,128,322.37/152,766.96
6. Step 6: Final answer
   x = 117,009.13