Finding the Fourth Proportional to 56,820.96, 78,388.56 and 34,153.92

Step by Step Solution

1. Step 1: Write the proportion equation
   56,820.96 : 78,388.56 = 34,153.92 : x
2. Step 2: Convert to fraction form
   56,820.96/78,388.56 = 34,153.92/x
3. Step 3: Cross multiply
   56,820.96x = 78,388.56 × 34,153.92
4. Step 4: Simplify right side
   56,820.96x = 2,677,276,607.16
5. Step 5: Solve for x
   x = 2,677,276,607.16/56,820.96
6. Step 6: Final answer
   x = 47,117.76