Finding the Fourth Proportional to 42,731,408.16, 58,947,842.88 and 28,045,036.80

Step by Step Solution

1. Step 1: Write the proportion equation
   42,731,408.16 : 58,947,842.88 = 28,045,036.80 : x
2. Step 2: Convert to fraction form
   42,731,408.16/58,947,842.88 = 28,045,036.80/x
3. Step 3: Cross multiply
   42,731,408.16x = 58,947,842.88 × 28,045,036.80
4. Step 4: Simplify right side
   42,731,408.16x = 1,653,194,422,850,218
5. Step 5: Solve for x
   x = 1,653,194,422,850,218/42,731,408.16
6. Step 6: Final answer
   x = 38,688,039.88