Finding the Fourth Proportional to 53,385.84, 73,667.52 and 30,718.80

Step by Step Solution

1. Step 1: Write the proportion equation
   53,385.84 : 73,667.52 = 30,718.80 : x
2. Step 2: Convert to fraction form
   53,385.84/73,667.52 = 30,718.80/x
3. Step 3: Cross multiply
   53,385.84x = 73,667.52 × 30,718.80
4. Step 4: Simplify right side
   53,385.84x = 2,262,977,813.38
5. Step 5: Solve for x
   x = 2,262,977,813.38/53,385.84
6. Step 6: Final answer
   x = 42,389.10