Finding the Fourth Proportional to 99,970, 137,960.04 and 55,258

Step by Step Solution

1. Step 1: Write the proportion equation
   99,970 : 137,960.04 = 55,258 : x
2. Step 2: Convert to fraction form
   99,970/137,960.04 = 55,258/x
3. Step 3: Cross multiply
   99,970x = 137,960.04 × 55,258
4. Step 4: Simplify right side
   99,970x = 7,623,395,890.32
5. Step 5: Solve for x
   x = 7,623,395,890.32/99,970
6. Step 6: Final answer
   x = 76,256.84