Finding the Fourth Proportional to 53,538.56, 73,881.22 and 30,878.48

Step by Step Solution

1. Step 1: Write the proportion equation
   53,538.56 : 73,881.22 = 30,878.48 : x
2. Step 2: Convert to fraction form
   53,538.56/73,881.22 = 30,878.48/x
3. Step 3: Cross multiply
   53,538.56x = 73,881.22 × 30,878.48
4. Step 4: Simplify right side
   53,538.56x = 2,281,339,774.15
5. Step 5: Solve for x
   x = 2,281,339,774.15/53,538.56
6. Step 6: Final answer
   x = 42,611.15