Finding the Fourth Proportional to 78,785.64, 108,722.16 and 42,973.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,785.64 : 108,722.16 = 42,973.56 : x
2. Step 2: Convert to fraction form
   78,785.64/108,722.16 = 42,973.56/x
3. Step 3: Cross multiply
   78,785.64x = 108,722.16 × 42,973.56
4. Step 4: Simplify right side
   78,785.64x = 4,672,178,266.09
5. Step 5: Solve for x
   x = 4,672,178,266.09/78,785.64
6. Step 6: Final answer
   x = 59,302.41