Finding the Fourth Proportional to 129,957,300.80, 194,805,896.21 and 64,426,392.54

Step by Step Solution

1. Step 1: Write the proportion equation
   129,957,300.80 : 194,805,896.21 = 64,426,392.54 : x
2. Step 2: Convert to fraction form
   129,957,300.80/194,805,896.21 = 64,426,392.54/x
3. Step 3: Cross multiply
   129,957,300.80x = 194,805,896.21 × 64,426,392.54
4. Step 4: Simplify right side
   129,957,300.80x = 12,550,641,138,066,098
5. Step 5: Solve for x
   x = 12,550,641,138,066,098/129,957,300.80
6. Step 6: Final answer
   x = 96,575,113.99