Finding the Fourth Proportional to 171,207,122, 256,756,737 and 56,164,856.72

Step by Step Solution

1. Step 1: Write the proportion equation
   171,207,122 : 256,756,737 = 56,164,856.72 : x
2. Step 2: Convert to fraction form
   171,207,122/256,756,737 = 56,164,856.72/x
3. Step 3: Cross multiply
   171,207,122x = 256,756,737 × 56,164,856.72
4. Step 4: Simplify right side
   171,207,122x = 14,420,705,345,499,722
5. Step 5: Solve for x
   x = 14,420,705,345,499,722/171,207,122
6. Step 6: Final answer
   x = 84,229,587.98