Finding the Fourth Proportional to 78,420.83, 108,220.57 and 42,611.00

Step by Step Solution

1. Step 1: Write the proportion equation
   78,420.83 : 108,220.57 = 42,611.00 : x
2. Step 2: Convert to fraction form
   78,420.83/108,220.57 = 42,611.00/x
3. Step 3: Cross multiply
   78,420.83x = 108,220.57 × 42,611.00
4. Step 4: Simplify right side
   78,420.83x = 4,611,386,060.64
5. Step 5: Solve for x
   x = 4,611,386,060.64/78,420.83
6. Step 6: Final answer
   x = 58,803.08