Finding the Fourth Proportional to 77,668,796.72, 107,185,513.86 and 42,388,533.65

Step by Step Solution

1. Step 1: Write the proportion equation
   77,668,796.72 : 107,185,513.86 = 42,388,533.65 : x
2. Step 2: Convert to fraction form
   77,668,796.72/107,185,513.86 = 42,388,533.65/x
3. Step 3: Cross multiply
   77,668,796.72x = 107,185,513.86 × 42,388,533.65
4. Step 4: Simplify right side
   77,668,796.72x = 4,543,436,760,511,224
5. Step 5: Solve for x
   x = 4,543,436,760,511,224/77,668,796.72
6. Step 6: Final answer
   x = 58,497,581.43