Finding the Fourth Proportional to 42,968,223.64, 64,451,697.60 and 10,620,124.39

Step by Step Solution

1. Step 1: Write the proportion equation
   42,968,223.64 : 64,451,697.60 = 10,620,124.39 : x
2. Step 2: Convert to fraction form
   42,968,223.64/64,451,697.60 = 10,620,124.39/x
3. Step 3: Cross multiply
   42,968,223.64x = 64,451,697.60 × 10,620,124.39
4. Step 4: Simplify right side
   42,968,223.64x = 684,485,045,336,406
5. Step 5: Solve for x
   x = 684,485,045,336,406/42,968,223.64
6. Step 6: Final answer
   x = 15,930,028.92