Finding the Fourth Proportional to 78,777.84, 108,714.60 and 42,967.72

Step by Step Solution

1. Step 1: Write the proportion equation
   78,777.84 : 108,714.60 = 42,967.72 : x
2. Step 2: Convert to fraction form
   78,777.84/108,714.60 = 42,967.72/x
3. Step 3: Cross multiply
   78,777.84x = 108,714.60 × 42,967.72
4. Step 4: Simplify right side
   78,777.84x = 4,671,218,492.71
5. Step 5: Solve for x
   x = 4,671,218,492.71/78,777.84
6. Step 6: Final answer
   x = 59,296.10