Finding the Fourth Proportional to 101,154, 139,592.52 and 56,442.32

Step by Step Solution

1. Step 1: Write the proportion equation
   101,154 : 139,592.52 = 56,442.32 : x
2. Step 2: Convert to fraction form
   101,154/139,592.52 = 56,442.32/x
3. Step 3: Cross multiply
   101,154x = 139,592.52 × 56,442.32
4. Step 4: Simplify right side
   101,154x = 7,878,925,683.45
5. Step 5: Solve for x
   x = 7,878,925,683.45/101,154
6. Step 6: Final answer
   x = 77,890.40