Finding the Fourth Proportional to 98,820.18, 148,185.45 and 42,633.72

Step by Step Solution

1. Step 1: Write the proportion equation
   98,820.18 : 148,185.45 = 42,633.72 : x
2. Step 2: Convert to fraction form
   98,820.18/148,185.45 = 42,633.72/x
3. Step 3: Cross multiply
   98,820.18x = 148,185.45 × 42,633.72
4. Step 4: Simplify right side
   98,820.18x = 6,317,696,983.37
5. Step 5: Solve for x
   x = 6,317,696,983.37/98,820.18
6. Step 6: Final answer
   x = 63,931.24