Finding the Fourth Proportional to 78,542.74, 108,389.45 and 42,733.01

Step by Step Solution

1. Step 1: Write the proportion equation
   78,542.74 : 108,389.45 = 42,733.01 : x
2. Step 2: Convert to fraction form
   78,542.74/108,389.45 = 42,733.01/x
3. Step 3: Cross multiply
   78,542.74x = 108,389.45 × 42,733.01
4. Step 4: Simplify right side
   78,542.74x = 4,631,807,828.55
5. Step 5: Solve for x
   x = 4,631,807,828.55/78,542.74
6. Step 6: Final answer
   x = 58,971.82