Finding the Fourth Proportional to 147,540,496.09, 221,321,372.96 and 56,664,085.09

Step by Step Solution

1. Step 1: Write the proportion equation
   147,540,496.09 : 221,321,372.96 = 56,664,085.09 : x
2. Step 2: Convert to fraction form
   147,540,496.09/221,321,372.96 = 56,664,085.09/x
3. Step 3: Cross multiply
   147,540,496.09x = 221,321,372.96 × 56,664,085.09
4. Step 4: Simplify right side
   147,540,496.09x = 12,540,973,109,641,066
5. Step 5: Solve for x
   x = 12,540,973,109,641,066/147,540,496.09
6. Step 6: Final answer
   x = 85,000,209.72