Finding the Fourth Proportional to 42,541,646.40, 63,799,084.48 and 13,781,109.12

Step by Step Solution

1. Step 1: Write the proportion equation
   42,541,646.40 : 63,799,084.48 = 13,781,109.12 : x
2. Step 2: Convert to fraction form
   42,541,646.40/63,799,084.48 = 13,781,109.12/x
3. Step 3: Cross multiply
   42,541,646.40x = 63,799,084.48 × 13,781,109.12
4. Step 4: Simplify right side
   42,541,646.40x = 879,222,144,974,978.38
5. Step 5: Solve for x
   x = 879,222,144,974,978.38/42,541,646.40
6. Step 6: Final answer
   x = 20,667,327.65