Finding the Fourth Proportional to 42,154,809.72, 58,155,824.05 and 28,220,654.18

Step by Step Solution

1. Step 1: Write the proportion equation
   42,154,809.72 : 58,155,824.05 = 28,220,654.18 : x
2. Step 2: Convert to fraction form
   42,154,809.72/58,155,824.05 = 28,220,654.18/x
3. Step 3: Cross multiply
   42,154,809.72x = 58,155,824.05 × 28,220,654.18
4. Step 4: Simplify right side
   42,154,809.72x = 1,641,195,398,926,873.75
5. Step 5: Solve for x
   x = 1,641,195,398,926,873.75/42,154,809.72
6. Step 6: Final answer
   x = 38,932,577.56