Finding the Fourth Proportional to 291,419.94, 436,870.58 and 113,886.58

Step by Step Solution

1. Step 1: Write the proportion equation
   291,419.94 : 436,870.58 = 113,886.58 : x
2. Step 2: Convert to fraction form
   291,419.94/436,870.58 = 113,886.58/x
3. Step 3: Cross multiply
   291,419.94x = 436,870.58 × 113,886.58
4. Step 4: Simplify right side
   291,419.94x = 49,753,696,258.82
5. Step 5: Solve for x
   x = 49,753,696,258.82/291,419.94
6. Step 6: Final answer
   x = 170,728.52