Finding the Fourth Proportional to 144,584,658.52, 199,528,262.42 and 78,505,698.28

Step by Step Solution

1. Step 1: Write the proportion equation
   144,584,658.52 : 199,528,262.42 = 78,505,698.28 : x
2. Step 2: Convert to fraction form
   144,584,658.52/199,528,262.42 = 78,505,698.28/x
3. Step 3: Cross multiply
   144,584,658.52x = 199,528,262.42 × 78,505,698.28
4. Step 4: Simplify right side
   144,584,658.52x = 15,664,105,567,877,182
5. Step 5: Solve for x
   x = 15,664,105,567,877,182/144,584,658.52
6. Step 6: Final answer
   x = 108,338,642.07