Finding the Fourth Proportional to 89,075.73, 133,628.31 and 42,312.81

Step by Step Solution

1. Step 1: Write the proportion equation
   89,075.73 : 133,628.31 = 42,312.81 : x
2. Step 2: Convert to fraction form
   89,075.73/133,628.31 = 42,312.81/x
3. Step 3: Cross multiply
   89,075.73x = 133,628.31 × 42,312.81
4. Step 4: Simplify right side
   89,075.73x = 5,654,189,291.65
5. Step 5: Solve for x
   x = 5,654,189,291.65/89,075.73
6. Step 6: Final answer
   x = 63,476.20