Finding the Fourth Proportional to 53,485.32, 73,872.23 and 42,767.21

Step by Step Solution

1. Step 1: Write the proportion equation
   53,485.32 : 73,872.23 = 42,767.21 : x
2. Step 2: Convert to fraction form
   53,485.32/73,872.23 = 42,767.21/x
3. Step 3: Cross multiply
   53,485.32x = 73,872.23 × 42,767.21
4. Step 4: Simplify right side
   53,485.32x = 3,159,308,590.38
5. Step 5: Solve for x
   x = 3,159,308,590.38/53,485.32
6. Step 6: Final answer
   x = 59,068.71