Finding the Fourth Proportional to 56,894,633.69, 78,514,789.89 and 30,789,144.60

Step by Step Solution

1. Step 1: Write the proportion equation
   56,894,633.69 : 78,514,789.89 = 30,789,144.60 : x
2. Step 2: Convert to fraction form
   56,894,633.69/78,514,789.89 = 30,789,144.60/x
3. Step 3: Cross multiply
   56,894,633.69x = 78,514,789.89 × 30,789,144.60
4. Step 4: Simplify right side
   56,894,633.69x = 2,417,403,218,982,857
5. Step 5: Solve for x
   x = 2,417,403,218,982,857/56,894,633.69
6. Step 6: Final answer
   x = 42,489,125.29