Finding the Fourth Proportional to 64,383,784.86, 89,083,567.08 and 56,141,036.70

Step by Step Solution

1. Step 1: Write the proportion equation
   64,383,784.86 : 89,083,567.08 = 56,141,036.70 : x
2. Step 2: Convert to fraction form
   64,383,784.86/89,083,567.08 = 56,141,036.70/x
3. Step 3: Cross multiply
   64,383,784.86x = 89,083,567.08 × 56,141,036.70
4. Step 4: Simplify right side
   64,383,784.86x = 5,001,243,808,805,192
5. Step 5: Solve for x
   x = 5,001,243,808,805,192/64,383,784.86
6. Step 6: Final answer
   x = 77,678,623.89