Finding the Fourth Proportional to 98,430.42, 147,669.15 and 31,870.62

Step by Step Solution

1. Step 1: Write the proportion equation
   98,430.42 : 147,669.15 = 31,870.62 : x
2. Step 2: Convert to fraction form
   98,430.42/147,669.15 = 31,870.62/x
3. Step 3: Cross multiply
   98,430.42x = 147,669.15 × 31,870.62
4. Step 4: Simplify right side
   98,430.42x = 4,706,307,365.37
5. Step 5: Solve for x
   x = 4,706,307,365.37/98,430.42
6. Step 6: Final answer
   x = 47,813.55