Finding the Fourth Proportional to 70,956.84, 106,434.72 and 21,037.08

Step by Step Solution

1. Step 1: Write the proportion equation
   70,956.84 : 106,434.72 = 21,037.08 : x
2. Step 2: Convert to fraction form
   70,956.84/106,434.72 = 21,037.08/x
3. Step 3: Cross multiply
   70,956.84x = 106,434.72 × 21,037.08
4. Step 4: Simplify right side
   70,956.84x = 2,239,075,719.42
5. Step 5: Solve for x
   x = 2,239,075,719.42/70,956.84
6. Step 6: Final answer
   x = 31,555.46