Finding the Fourth Proportional to 110,298.61, 152,223.33 and 64,990.72

Step by Step Solution

1. Step 1: Write the proportion equation
   110,298.61 : 152,223.33 = 64,990.72 : x
2. Step 2: Convert to fraction form
   110,298.61/152,223.33 = 64,990.72/x
3. Step 3: Cross multiply
   110,298.61x = 152,223.33 × 64,990.72
4. Step 4: Simplify right side
   110,298.61x = 9,893,103,817.50
5. Step 5: Solve for x
   x = 9,893,103,817.50/110,298.61
6. Step 6: Final answer
   x = 89,693.82