Finding the Fourth Proportional to 42,707,253.30, 64,071,804.03 and 12,415,116.30

Step by Step Solution

1. Step 1: Write the proportion equation
   42,707,253.30 : 64,071,804.03 = 12,415,116.30 : x
2. Step 2: Convert to fraction form
   42,707,253.30/64,071,804.03 = 12,415,116.30/x
3. Step 3: Cross multiply
   42,707,253.30x = 64,071,804.03 × 12,415,116.30
4. Step 4: Simplify right side
   42,707,253.30x = 795,458,898,583,258.75
5. Step 5: Solve for x
   x = 795,458,898,583,258.75/42,707,253.30
6. Step 6: Final answer
   x = 18,625,850.11