Finding the Fourth Proportional to 152,803.60, 210,870.78 and 84,821.92

Step by Step Solution

1. Step 1: Write the proportion equation
   152,803.60 : 210,870.78 = 84,821.92 : x
2. Step 2: Convert to fraction form
   152,803.60/210,870.78 = 84,821.92/x
3. Step 3: Cross multiply
   152,803.60x = 210,870.78 × 84,821.92
4. Step 4: Simplify right side
   152,803.60x = 17,886,464,431.50
5. Step 5: Solve for x
   x = 17,886,464,431.50/152,803.60
6. Step 6: Final answer
   x = 117,055.26