Finding the Fourth Proportional to 98,428.42, 147,666.15 and 31,868.62

Step by Step Solution

1. Step 1: Write the proportion equation
   98,428.42 : 147,666.15 = 31,868.62 : x
2. Step 2: Convert to fraction form
   98,428.42/147,666.15 = 31,868.62/x
3. Step 3: Cross multiply
   98,428.42x = 147,666.15 × 31,868.62
4. Step 4: Simplify right side
   98,428.42x = 4,705,916,421.21
5. Step 5: Solve for x
   x = 4,705,916,421.21/98,428.42
6. Step 6: Final answer
   x = 47,810.55