Finding the Fourth Proportional to 78,557.42, 108,411.54 and 42,749.76

Step by Step Solution

1. Step 1: Write the proportion equation
   78,557.42 : 108,411.54 = 42,749.76 : x
2. Step 2: Convert to fraction form
   78,557.42/108,411.54 = 42,749.76/x
3. Step 3: Cross multiply
   78,557.42x = 108,411.54 × 42,749.76
4. Step 4: Simplify right side
   78,557.42x = 4,634,567,316.23
5. Step 5: Solve for x
   x = 4,634,567,316.23/78,557.42
6. Step 6: Final answer
   x = 58,995.92