Finding the Fourth Proportional to 53,560.65, 73,914.89 and 30,900.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,560.65 : 73,914.89 = 30,900.50 : x
2. Step 2: Convert to fraction form
   53,560.65/73,914.89 = 30,900.50/x
3. Step 3: Cross multiply
   53,560.65x = 73,914.89 × 30,900.50
4. Step 4: Simplify right side
   53,560.65x = 2,284,006,534.37
5. Step 5: Solve for x
   x = 2,284,006,534.37/53,560.65
6. Step 6: Final answer
   x = 42,643.37