Finding the Fourth Proportional to 101,404.58, 139,938.64 and 56,692.58

Step by Step Solution

1. Step 1: Write the proportion equation
   101,404.58 : 139,938.64 = 56,692.58 : x
2. Step 2: Convert to fraction form
   101,404.58/139,938.64 = 56,692.58/x
3. Step 3: Cross multiply
   101,404.58x = 139,938.64 × 56,692.58
4. Step 4: Simplify right side
   101,404.58x = 7,933,482,543.29
5. Step 5: Solve for x
   x = 7,933,482,543.29/101,404.58
6. Step 6: Final answer
   x = 78,235.94