Finding the Fourth Proportional to 68,474,145.89, 102,468,763.01 and 42,578,641.61

Step by Step Solution

1. Step 1: Write the proportion equation
   68,474,145.89 : 102,468,763.01 = 42,578,641.61 : x
2. Step 2: Convert to fraction form
   68,474,145.89/102,468,763.01 = 42,578,641.61/x
3. Step 3: Cross multiply
   68,474,145.89x = 102,468,763.01 × 42,578,641.61
4. Step 4: Simplify right side
   68,474,145.89x = 4,362,980,736,161,883.50
5. Step 5: Solve for x
   x = 4,362,980,736,161,883.50/68,474,145.89
6. Step 6: Final answer
   x = 63,717,198.36