Finding the Fourth Proportional to 112,907.82, 169,327.14 and 78,071.34

Step by Step Solution

1. Step 1: Write the proportion equation
   112,907.82 : 169,327.14 = 78,071.34 : x
2. Step 2: Convert to fraction form
   112,907.82/169,327.14 = 78,071.34/x
3. Step 3: Cross multiply
   112,907.82x = 169,327.14 × 78,071.34
4. Step 4: Simplify right side
   112,907.82x = 13,219,596,718.17
5. Step 5: Solve for x
   x = 13,219,596,718.17/112,907.82
6. Step 6: Final answer
   x = 117,083.09