Finding the Fourth Proportional to 42,915.98, 64,302.69 and 30,373.94

Step by Step Solution

1. Step 1: Write the proportion equation
   42,915.98 : 64,302.69 = 30,373.94 : x
2. Step 2: Convert to fraction form
   42,915.98/64,302.69 = 30,373.94/x
3. Step 3: Cross multiply
   42,915.98x = 64,302.69 × 30,373.94
4. Step 4: Simplify right side
   42,915.98x = 1,953,126,322.56
5. Step 5: Solve for x
   x = 1,953,126,322.56/42,915.98
6. Step 6: Final answer
   x = 45,510.47