Finding the Fourth Proportional to 78,657.81, 108,549.06 and 42,847.86

Step by Step Solution

1. Step 1: Write the proportion equation
   78,657.81 : 108,549.06 = 42,847.86 : x
2. Step 2: Convert to fraction form
   78,657.81/108,549.06 = 42,847.86/x
3. Step 3: Cross multiply
   78,657.81x = 108,549.06 × 42,847.86
4. Step 4: Simplify right side
   78,657.81x = 4,651,094,926.01
5. Step 5: Solve for x
   x = 4,651,094,926.01/78,657.81
6. Step 6: Final answer
   x = 59,130.75