Finding the Fourth Proportional to 42,154,796.63, 58,155,805.99 and 28,220,641.10

Step by Step Solution

1. Step 1: Write the proportion equation
   42,154,796.63 : 58,155,805.99 = 28,220,641.10 : x
2. Step 2: Convert to fraction form
   42,154,796.63/58,155,805.99 = 28,220,641.10/x
3. Step 3: Cross multiply
   42,154,796.63x = 58,155,805.99 × 28,220,641.10
4. Step 4: Simplify right side
   42,154,796.63x = 1,641,194,128,579,630.75
5. Step 5: Solve for x
   x = 1,641,194,128,579,630.75/42,154,796.63
6. Step 6: Final answer
   x = 38,932,559.52