Finding the Fourth Proportional to 123,964.20, 185,972.40 and 64,783.98

Step by Step Solution

1. Step 1: Write the proportion equation
   123,964.20 : 185,972.40 = 64,783.98 : x
2. Step 2: Convert to fraction form
   123,964.20/185,972.40 = 64,783.98/x
3. Step 3: Cross multiply
   123,964.20x = 185,972.40 × 64,783.98
4. Step 4: Simplify right side
   123,964.20x = 12,048,032,242.15
5. Step 5: Solve for x
   x = 12,048,032,242.15/123,964.20
6. Step 6: Final answer
   x = 97,189.61