Finding the Fourth Proportional to 64,779.36, 89,417.88 and 37,930.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,779.36 : 89,417.88 = 37,930.50 : x
2. Step 2: Convert to fraction form
   64,779.36/89,417.88 = 37,930.50/x
3. Step 3: Cross multiply
   64,779.36x = 89,417.88 × 37,930.50
4. Step 4: Simplify right side
   64,779.36x = 3,391,664,897.34
5. Step 5: Solve for x
   x = 3,391,664,897.34/64,779.36
6. Step 6: Final answer
   x = 52,357.18