Finding the Fourth Proportional to 42,148,945.76, 63,232,443.05 and 12,607,456.19

Step by Step Solution

1. Step 1: Write the proportion equation
   42,148,945.76 : 63,232,443.05 = 12,607,456.19 : x
2. Step 2: Convert to fraction form
   42,148,945.76/63,232,443.05 = 12,607,456.19/x
3. Step 3: Cross multiply
   42,148,945.76x = 63,232,443.05 × 12,607,456.19
4. Step 4: Simplify right side
   42,148,945.76x = 797,200,255,160,345.50
5. Step 5: Solve for x
   x = 797,200,255,160,345.50/42,148,945.76
6. Step 6: Final answer
   x = 18,913,883.63