Finding the Fourth Proportional to 112,764.54, 155,686.78 and 70,385.34

Step by Step Solution

1. Step 1: Write the proportion equation
   112,764.54 : 155,686.78 = 70,385.34 : x
2. Step 2: Convert to fraction form
   112,764.54/155,686.78 = 70,385.34/x
3. Step 3: Cross multiply
   112,764.54x = 155,686.78 × 70,385.34
4. Step 4: Simplify right side
   112,764.54x = 10,958,066,943.81
5. Step 5: Solve for x
   x = 10,958,066,943.81/112,764.54
6. Step 6: Final answer
   x = 97,176.53