Finding the Fourth Proportional to 45,345, 62,572.82 and 28,356.86

Step by Step Solution

1. Step 1: Write the proportion equation
   45,345 : 62,572.82 = 28,356.86 : x
2. Step 2: Convert to fraction form
   45,345/62,572.82 = 28,356.86/x
3. Step 3: Cross multiply
   45,345x = 62,572.82 × 28,356.86
4. Step 4: Simplify right side
   45,345x = 1,774,368,696.55
5. Step 5: Solve for x
   x = 1,774,368,696.55/45,345
6. Step 6: Final answer
   x = 39,130.42