Finding the Fourth Proportional to 123,965.20, 185,973.90 and 64,784.98

Step by Step Solution

1. Step 1: Write the proportion equation
   123,965.20 : 185,973.90 = 64,784.98 : x
2. Step 2: Convert to fraction form
   123,965.20/185,973.90 = 64,784.98/x
3. Step 3: Cross multiply
   123,965.20x = 185,973.90 × 64,784.98
4. Step 4: Simplify right side
   123,965.20x = 12,048,315,392.02
5. Step 5: Solve for x
   x = 12,048,315,392.02/123,965.20
6. Step 6: Final answer
   x = 97,191.11