Finding the Fourth Proportional to 90,434,288.38, 135,596,817.11 and 40,569,978.61

Step by Step Solution

1. Step 1: Write the proportion equation
   90,434,288.38 : 135,596,817.11 = 40,569,978.61 : x
2. Step 2: Convert to fraction form
   90,434,288.38/135,596,817.11 = 40,569,978.61/x
3. Step 3: Cross multiply
   90,434,288.38x = 135,596,817.11 × 40,569,978.61
4. Step 4: Simplify right side
   90,434,288.38x = 5,501,159,968,855,947
5. Step 5: Solve for x
   x = 5,501,159,968,855,947/90,434,288.38
6. Step 6: Final answer
   x = 60,830,466.71