Finding the Fourth Proportional to 101,200, 139,656.08 and 56,488

Step by Step Solution

1. Step 1: Write the proportion equation
   101,200 : 139,656.08 = 56,488 : x
2. Step 2: Convert to fraction form
   101,200/139,656.08 = 56,488/x
3. Step 3: Cross multiply
   101,200x = 139,656.08 × 56,488
4. Step 4: Simplify right side
   101,200x = 7,888,892,647.04
5. Step 5: Solve for x
   x = 7,888,892,647.04/101,200
6. Step 6: Final answer
   x = 77,953.48