Finding the Fourth Proportional to 164,196.56, 245,925.77 and 99,980.77

Step by Step Solution

1. Step 1: Write the proportion equation
   164,196.56 : 245,925.77 = 99,980.77 : x
2. Step 2: Convert to fraction form
   164,196.56/245,925.77 = 99,980.77/x
3. Step 3: Cross multiply
   164,196.56x = 245,925.77 × 99,980.77
4. Step 4: Simplify right side
   164,196.56x = 24,587,846,732.72
5. Step 5: Solve for x
   x = 24,587,846,732.72/164,196.56
6. Step 6: Final answer
   x = 149,746.42