Finding the Fourth Proportional to 53,343.50, 73,611.18 and 30,678.89

Step by Step Solution

1. Step 1: Write the proportion equation
   53,343.50 : 73,611.18 = 30,678.89 : x
2. Step 2: Convert to fraction form
   53,343.50/73,611.18 = 30,678.89/x
3. Step 3: Cross multiply
   53,343.50x = 73,611.18 × 30,678.89
4. Step 4: Simplify right side
   53,343.50x = 2,258,308,925.93
5. Step 5: Solve for x
   x = 2,258,308,925.93/53,343.50
6. Step 6: Final answer
   x = 42,335.23