Finding the Fourth Proportional to 138,936,784.22, 208,468,818.69 and 60,177,380.72

Step by Step Solution

1. Step 1: Write the proportion equation
   138,936,784.22 : 208,468,818.69 = 60,177,380.72 : x
2. Step 2: Convert to fraction form
   138,936,784.22/208,468,818.69 = 60,177,380.72/x
3. Step 3: Cross multiply
   138,936,784.22x = 208,468,818.69 × 60,177,380.72
4. Step 4: Simplify right side
   138,936,784.22x = 12,545,107,469,288,774
5. Step 5: Solve for x
   x = 12,545,107,469,288,774/138,936,784.22
6. Step 6: Final answer
   x = 90,293,636.35