Finding the Fourth Proportional to 102,831,196.29, 141,909,662.19 and 56,421,437.91

Step by Step Solution

1. Step 1: Write the proportion equation
   102,831,196.29 : 141,909,662.19 = 56,421,437.91 : x
2. Step 2: Convert to fraction form
   102,831,196.29/141,909,662.19 = 56,421,437.91/x
3. Step 3: Cross multiply
   102,831,196.29x = 141,909,662.19 × 56,421,437.91
4. Step 4: Simplify right side
   102,831,196.29x = 8,006,747,194,082,159
5. Step 5: Solve for x
   x = 8,006,747,194,082,159/102,831,196.29
6. Step 6: Final answer
   x = 77,863,017.09