Finding the Fourth Proportional to 42,504,665.80, 63,750,155.82 and 12,205,637.32

Step by Step Solution

1. Step 1: Write the proportion equation
   42,504,665.80 : 63,750,155.82 = 12,205,637.32 : x
2. Step 2: Convert to fraction form
   42,504,665.80/63,750,155.82 = 12,205,637.32/x
3. Step 3: Cross multiply
   42,504,665.80x = 63,750,155.82 × 12,205,637.32
4. Step 4: Simplify right side
   42,504,665.80x = 778,111,281,032,407.25
5. Step 5: Solve for x
   x = 778,111,281,032,407.25/42,504,665.80
6. Step 6: Final answer
   x = 18,306,490.98