Finding the Fourth Proportional to 99,886.83, 137,848.01 and 57,445.39

Step by Step Solution

1. Step 1: Write the proportion equation
   99,886.83 : 137,848.01 = 57,445.39 : x
2. Step 2: Convert to fraction form
   99,886.83/137,848.01 = 57,445.39/x
3. Step 3: Cross multiply
   99,886.83x = 137,848.01 × 57,445.39
4. Step 4: Simplify right side
   99,886.83x = 7,918,732,939.29
5. Step 5: Solve for x
   x = 7,918,732,939.29/99,886.83
6. Step 6: Final answer
   x = 79,277.05